Changing of crankcase oil
[建] 换曲轴箱油
🧩 词语组成解析
v. 交换；兑换；改变（change的ing形式）
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
n. 曲轴箱\\n[建] 曲柄箱
oil
[ɔɪl]
n. 油;石油;油画;燃油;
vt. 给…加油;
vi. 化成油;
🗣️ 情景例句
He's the Dean of Admissions for the University of Michigan.
他是Michigan大学的新生注册主任。
The darkest hour is that before the dawn.
黎明前是最黑暗的时刻。
How did you find the talk this morning?
你觉得今天早晨的报告怎么样？