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
Having some dinner?
吃点晚餐？
Randy was furious about the nasty letter.
兰迪为这封下流的信而勃然大怒。
and often are foolish enough to let the adolescents see that they are annoyed.
而且愚蠢地让孩子看出自己的烦恼。