Classification of crude oil
[化] 原油分类
🧩 词语组成解析
classification
[,klæsɪfɪ'keʃən]
n. 分类;分级;类别;（动植物等的）分类学;
class类别+ifi=fy使...+cation表名词 → classify分类+cation表名词 → 分类法
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
Yor're quite right.
您说得对。
Bind the sack before it be full.
做事应适可而止。
No, more, about 130 years ago. Most of the slave owners were rich farmers who lived in the south. They wanted to keep their slaves.
不，还要早，大约130年前。大多数奴隶主都是住在南方的富有的农场主。他们想保留自己的奴隶。