go or move back or further away from previous position.

Preparation by treating something in a certain way. perform mechanical or chemical operations on.

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. By a particular way or process; by the use of.

equipment in room, building, or street for producing light. To cause something to burn; put a burning match to.

sound properties of room. The study of the physical properties of sound.

Concerning cars.

picture made using camera, in which image is focused on to light-sensitive material. take photograph of.

having become or been made better. To make, or become, something better.

painted cloth hung at back of theatre stage as part of scenery. lie behind or beyond.

first or earliest. earliest form of something.

The round part of the eye. look or stare at closely.

way of carrying out particular task. Ways of doing by using special knowledge or skill.

Existing or occurring at the beginning. First letter of your given name. To authorize something by writing your initials.

not producing excitement or interest.

used or accepted as normal or average. Official unit of measuring something.