Crankcase lubrication
[建] 曲轴箱内的润滑油
🧩 词语组成解析
n. 曲轴箱\\n[建] 曲柄箱
n. 润滑, 注油, 润滑作用\\n[计] 润滑
🗣️ 情景例句
I know you 're a CPA.
我知道你是一位会计师。
In college I majored in economics, What was you major?
大学时我主修经济，你主修什么呢？
The next evening the man upstairs came home from work late as usual.
第二天晚上，楼上人和平时一样很晚才下班回家。