A gas-operated hot-water heater.

• 汽动水加热器

A gas-operated hot-water heater.的用法和样例：

例句

1. Water heaters and air-conditioners might stock up on heat or cold in anticipation of such shutdowns.
   事先估计到会关断，水加热器或空调就可以储备一些热能或冷气。