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
OK, everybody.
好啦 各位。
You cannot see the wood for trees.
见树不见林。
'The play may begin at any moment,' I said.
“剧马上就要开演了，”我说。