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
Mr. Harrison, how nice to meet you again.
哈里森先生，真高兴再见到你。
How long will ti take you to finish the work?
你要花多长时间才能完成那项工作？
Some of them were as big as marbles.
有的钻石像玻璃球那么大。