名词

Heating Air-Conditioning-(暖气和空调)

1. 电;电力
Electricity is a form of energy that can be carried by wires and is used for heating and lighting, and to provide power for machines.

1. keen and shared excitement

e.g. the stage crackled with electricity whenever she was on it

2. a physical phenomenon associated with stationary or moving electrons and protons

3. energy made available by the flow of electric charge through a conductor

e.g. they built a car that runs on electricity

Synonym: electrical energy