"you don't know jack"
"jack up the car so you can change the tire"
She is going to jack this job in.
她将辞掉这份工作。
You need to jack up the car before you try to remove the wheel.
你得先把汽车顶起来,然后设法拆轮子。
jack sth ⇔ upIt's time you jacked up my salary.
你该给我增加工资了。
jack upDon't worry, he'll jack the whole thing up for us.
别担心,他会替我们把一切料理好的。