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
No. Thank you. I have a dinner date.
不 谢谢。我要去赴晚餐约会。
These buildings are supposed to be earth quakeproof.
这些建筑物是耐震建筑才对。
I don't know. I've got a headache and a cough.
我不知道。我头痛和咳嗽。