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
Public transportation is quite convenient in this city.
在这个城市里，公共交通很方便。
So many countries, so many customs.
一个国家有一个国家的风俗。
If we could stay as vigorous as we are at twelve,
假如我们能保持12岁时的旺盛生命力，