Composition of petroleum
[建] 石油的成份
🧩 词语组成解析
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];
🗣️ 情景例句
This is he speaking.
我就是。
I lost two teeth, my contract, and the game.
福无双降，祸不单行；黄鼠狼单咬病鸭子。
May I see it a moment?
我看一下好吗？