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
Sure. We've been in business about five years now.
当然。我们创业至今有五年的历史。
Better are small fish than an empty dish.
有胜于无。
I feel like going to a museum. It's too wet to go walking around London.
我想去博物馆。我们又不能绕着伦敦到处走走，地太湿了。