power source的用法和樣例：
例句
- Please turn off the electric power.
請把電源關掉。 - It is sometimes mistaken for a power supply hum.
有時候，亞音頻會被錯誤的認為是電源交流聲。 - All that is needed is a power source.
全部工作所需要的只是一個動力源。 - That part of a flight, in which the paraglider is not towed, carried or assisted by another aircraft or separate external or jettisonable power source.
飛行傘沒有被拖曳，運載或經由另一個航空器或獨立的外部或可拋棄式動力源的協助，所作的飛行部分。
