primary cell
primary cell — 名詞
1. a type of battery that produces electricity through a chemical reaction that can
一次電池
化學反應不可逆，無法充電的電池
a type of battery that produces electricity through a chemical reaction that cannot be reversed, so it cannot be recharged and must be replaced once the chemicals inside it are used up
The TV remote uses two AA primary cells; they cannot be recharged after running out.
電視遙控器使用兩顆AA一次電池，用完後無法充電。
countable noun with size specifier: two AA primary cells
Greta told her class that a primary cell stops working when the chemicals run out.
Greta 告訴班上同學，一次電池在化學物質耗盡後就會停止運作。
Samir checked whether the battery was a primary cell or a rechargeable one.
Samir 檢查這顆電池是一次電池還是充電電池。
Many electronic toys use primary cells; remove them when the toy is not in use.
許多電子玩具使用一次電池，不使用玩具時應取出電池。
Bao bought a box of primary cells for the smoke detector; they last many months.
Bao 買了一盒一次電池給煙霧偵測器，因為可以撐好幾個月。
- disposable battery
more common in everyday speech; emphasises that the battery is thrown away after use
- non-rechargeable battery
purely descriptive; often used on product packaging and safety warnings
- dry cell
technically a specific type of primary cell, but used informally as a general term for any non-rechargeable battery
- secondary cell
the formal technical term for a rechargeable battery
- rechargeable battery
the everyday term for a battery that can be used again after charging
文法句型
primary cell + verb (e.g. produces, runs out)
pack of + primary cells
size + primary cell (e.g. AA primary cell)
用法筆記
Distinguish from a secondary cell (rechargeable battery), which uses a reversible chemical reaction and can be recharged after use. In everyday conversation, most people simply say 'battery' rather than 'primary cell'.