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
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
Want of care does us more damage than want of knowledge.
粗心比无知更为有害。
The Greenwood Boys will be staying for five days.
“绿林少年”准备在此逗留5天。