a product that develops from another more important product

related to heat or temperature

the bottom layer of the inside of a shoe

Construction designed to provide reasonable protection against fire

type of radiation similar to light that can only be seen with special equipment

An instrument used to measure temperature

not connected by any cables

a machine that cleans floors and other surfaces by sucking up dust and dirt

beginning or source of something

Tool or piece of equipment

a tool or device used for a particular purpose

something you look through to see distant objects more clearly

occasion when a spacecraft is sent into space

object in orbit around the earth

easily carried from place to place

part of a population

a person who goes before others and opens the way for them to follow

a group of two or more computer systems linked together

to provide with what is needed

to move forward or make progress

connected or joined to something

the ability to see

the ability of a computer to perform tasks usually associated with human intelligence

of the face

the ability to know who someone is or what something is

Facts and statistics collected together for reference or analysis

the right of people not to reveal information about themselves

prepare for publication or presentation by correcting, revising, or adapting

discover the beginning of something or how it developed

to discover something not easily noticed

to recognize

place something in a particular category

Make clear the differences between two or more concepts or items.

as a way of doing something

perform the actions that allow you to begin using a computer system or website

the physical objects that someone produces

large in amount or level

to join or bring together

think carefully about doing something before you do it

deal with information, often using a computer

every day

obviously; to be completely understood by all parties

to be greater or more important than something else

it is likely that

likely to influence many people or things

able to do something

be a danger to someone or something

make a connection in your mind

marked by extreme and violent energy

feelings of anger and hate that could result in threatening or violent behavior

very frightening

a film that is a big commercial success

strange; difficult to understand

there are hidden facts that can't be seen or understood right away

become aware of something though you can't see or hear it

watchful; wide awake

the ability to see

one of the five powers (sight, hearing, smell, taste and touch) that your body uses to get information about the world around you

strong, very good

quick to notice or understand things or to react

rapid, repeated movement of shaking

reduction in the level or amount of something

the force of air pressing down on an area

to show or point out

for a limited time only

move from one country or region to another and settle there

A repeated decorative design.

electronic device that helps scientists locate and collect information about animals and their surroundings

thin flat part that sticks out from the body of a fish, dolphin, or whale, used for swimming and sensing

follow the development or change of something over time

make something happen

top, outside part of something

complete, accomplish

move in a particular direction

discover or identify what something is, locate

a sign that something exists or might happen

probability

an animal that is hunted and killed by another for food

to come near

lasting or expected to last for a long time

a simple prediction of the future

free yourself from an illness

illness caused by bacteria or virus

put power back into an empty battery

a lock that can be put on and removed

safe

to expose to injury or harm

a small raised area built across a road to force people to drive more slowly

large number; many

to use something too often or too much

relating to the body

occurring at the beginning

happening or done at unexpected times

To copy data from one computer system to another or to a disk

to start again

translation of dialogue in a movie or TV show which appears at the bottom of the screen

secretly get into the files on a computer to get information or damage the files

a means to obtain entry or a means of approach

to suddenly stop working

document that you send to someone using email

make a computer etc more powerful

data from a computer that has been printed on paper

perform the actions that allow you to finish using a computer system

switch off a computer

continue to have

say officially that something may not be done

making you feel slightly angry or irritated

a lens that is placed directly on the cornea of the eye

good at noticing small but important things that other people might not notice

state of being made less or smaller

officially stop an activity by making it illegal or against the rules

annoying, especially because of something somebody continuously does or something that continuously happens

To continue with an effort or plan despite difficulties

existing in or caused by nature; not made or caused by humankind.

say you will not do something

to say that something is not true

use in place of another

to take a number or amount from another number or amount

to move from one place to another

to send out electronic signals, messages etc using radio, television, or other similar equipment

comply with rules, standards, or laws

to verify

official rule

being like others of its kind

official and serious

to give up on completely; to leave with no intention of returning

fail to care for properly

care taken to avoid danger or mistakes

something that you do to prevent bad things happening in the future

to find your way over or through an area

instrument which reacts to physical changes such as heat or light

something that gets in the way

put or introduce into something

extremely modern and advanced

unable to see properly

a stick that people can lean on to help them walk

in this way; as a result of this

put people or things into groups of two

a set of tools or equipment that you use for a particular purpose

ready to attack or start fights; acting in a hostile way

existing only in the imagination

less important than something else

particular time when something happens

without interruption or end

able to decide something quickly and with confidence

making or capable of making large amounts of; giving good results

careful to avoid danger or problems

of your own free will or design

the way in which the parts of something are arranged or laid out.

relating to the home or family; relating to one's own country

small machine that does something specific

picture or drawing in a book , magazine, etc

lasting or happening all day and night

fair and sensible

If you want my opinion

something which causes you to spend money

situation in which time isn't used well

used to introduce your opinion about sth

used to introduce what someone thinks

buy something

spend time, energy, or money on something that you think is good or useful

replace something with a different thing, especially a thing that is better or more satisfactory

one of a collection ,a single thing

happening all the time or very often

something that stops you paying attention to what you are doing

taking everything into account