你至少必须分外备有一组电池。

At the very minimum, you'll need an extra set of batteries.

youdao

第一组电池并没有着火。

The first battery tested last week didn't catch fire.

youdao

每一组电池应拥有自己的自动电池充电器。

Each set of batteries shall have its own automatic battery charger.

youdao

相信我一组电池给电动机供电，另一组给电路供电。

Trust me. One battery for motors, and one for circuits.

youdao

一个电池通常由一组或多组电池元组成。

A battery is made up of one or more cells.

youdao

一组回挨家挨户收废旧电池。

A back door to door collection of waste batteries.

youdao

一组回挨家挨户收废旧电池。

A back door to door collection of waste batteries.

youdao