The machines run on electricity. 这些机器靠电力运转。

an electricity supply 电力供应

Switch off the electricity before you attempt any repairs. 在你修任何东西之前，都要把电源切断。

generate/produce electricity Household waste could be burned to generate electricity. 可以焚烧生活垃圾来发电。

conduct electricity (=let it pass through) Salt water conducts electricity more easily. 导电