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
They are very much in love.
他们正在热恋。
How much will it cost?
这种商品成本价是多少？
We don't have space in the warehouse for it.
我们仓库没有空位了。