Preoiler
预先加油器, 预润滑器
🗣️ 情景例句
It's six o'clock.
已经六点了。
A chain is no stronger than its weakest link.
链条的坚固程度取决于它最薄弱的环节。
When she was arrested, the detective found out that the shop assistant was her daughter.
她被逮捕后。侦探发现原来那售货员是她的女儿。