complete ielts 4-5 unit 3

to be real; to be present in a place or situation

• Existent

• Existence

• Exist

doing something  in a good, careful and complete way with no waste of time, money or energy (adj)

• Efficient

• efficiency

• efficiently

to send out something such as light, heat, sound, gas, etc. 

• Emission

• Emit

• Emision

an attempt, by a large number of people, to change the government of a country, especially by violent action

• revolutionary

• Revolution

scientific knowledge used in practical ways in industry, for example in designing new machines

• Technology

• technologist

• technologically

(adv) to a fairly large degree, especially in comparison to something else

to change or make something change from one form, purpose, system

• converter

• Convert

• conversion

the act of fixing equipment or furniture in position so that it can be used

• Install

• installation

(n) a pattern of straight lines, usually crossing each other to form squares

(phr) to fill a container that already has some liquid in it with more liquid