Emergency unit
[化] 备用机件; 备用装置
🧩 词语组成解析
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
It was not until yesterday that I noticed it.
我一直到昨天才注意到它。
Industry if fortune's right hand, and frugality her left.
勤勉是幸福的右手，节俭是幸福的左手。
We had expected much lower prices.
我们希望报价再低一些。