person who is studying or has expert knowledge of one or more of natural or physical sciences.

To try to do something challenging or difficult.

1,000,000.

at high speed.

Mark or figure impressed or printed on something. impress mark on surface.

Acts of tripping and almost falling. Failing to do something well, e.g. giving a speech. trip or momentarily lose one's balance.

eat large amount greedily.

piece of paper, plastic, or foil covering and protecting something sold or for sale. Paper coverings for e.g. chocolate bars.

Electronic equipment to increases signal strength.

educational talk to audience. To give a talk or speech about a subject.

more distant in space. A greater distance; at a more distant point. (Used to introduce an additional point); also. To help to happen or develop; promote.

An attack on someone physically or emotionally. attack.

measurable extent. Measurements in space, e.g. length or diameter. cut or shape to particular measurements.

garment designed to allow astronaut to survive in space.

continuing or valid to final destination. expressing movement into one side and out of other side of opening etc.. Allowing you to pass between, or to.