Variable(displacement)pump
[化] 变量泵
🗣️ 情景例句
I sold your father that house seventeen years ago.
十七年前我把那栋房子卖给你父亲的。
Cleanliness is next to godliness.
清净近乎神圣。
The situation is serious. Something must be done before it's too late.
形势危急。得及时采取措施。