striving to achieve or attain something in face of difficulty or resistance. To try very hard to do something difficult.

(of pop or rock music) performed or recorded with acoustic rather than electrically amplified instruments. To pull out the plug of (electrical appliances).

different from one another. more than one. more than one.

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. Over, in, across an entire thing or place.

Connected with sound or hearing. sound properties of room.

Someone whose job is designing machines, buildings. design and build.

A device to convert one electric plug to another.

verbal or written answer. Replies to part of a song or reading, as in church.

system of two-way communication by loudspeaker.

Person's opinion or attitude about something. To put in a particular location or direction.

To make someone feel better in times of distress.

engaging in speech. action of talking. To say things or ideas to someone with words.

person employed to look after technical equipment or do practical work in laboratory. People whose job is to maintain, repair machinery.

device for observing or checking something. observe and check quality over time.

Having skill and knowledge gained by doing things. To gain knowledge by doing things.