B-unit
变数部件，变址部件
🧩 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
Why don't we get in the car and drive home?
我们何不开车回家？
A plant may produce new flowers; man is young but once.
花有重开日，人无再少年。
Are you going to ship this by air?
这批货你要用空运的吗？