battery

彰化縣竹塘鄉竹塘國小

Students learn about batteries in school. 

同學們在學校學習電池的相關知識。

They make a closed circuit with a battery. 

他們用電池做成閉合電路。

彰化縣人師教育協會

Kevin needs to replace a battery on his cell phone. 凱文需要更換手機電池。

He takes out the old battery to put in the new one.

他取出舊電池，裝上新電池。