Oil seal(ring)
[化] 油封圈
?? 詞語組成解析
oil
[??l]
n. 油;石油;油畫;燃油;
vt. 給…加油;
vi. 化成油;
??? 情景例句
I lost a whole day's work.
我丟掉一整天的工作成果。
I went there on business.
我出差到那兒。
There's something wrong with Kate.
凱特有些舒服。