Grade of oil
[经] 石油品级
🧩 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];
oil
[ɔɪl]
n. 油;石油;油画;燃油;
vt. 给…加油;
vi. 化成油;
🗣️ 情景例句
Havefun!
开心点。
Never think yourself above your business.
切莫自视过高。
Now Alfred began a long series of skirmishes -- and within a month the Danes had surrendered.
这时，阿尔弗雷德发起一连串小规模的进攻，结果不出一个月，丹麦人就投降了。