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
Is this good quality for the price?
这东西值这个价儿吗？
I have some difficulty in expressing myself.
我表达起来有点困难。
It is now standing in the corner of our sitting room.
它现在就站在客厅的一个角落。