Beam(-pumping) unit
[化] 抽油机
🧩 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
Now hear this!
你听着！
Saying is one thing, and doing another.
说是一回事，做是另一回事。
I was astonished.
我很吃惊。