jack up

1.顶起;顶高

2.抬高

1.增长

2.据...来推测

3.自升式

4.用千斤顶支起

5.采取维持商品或证券价格的措施

1.to use a jack to lift and support a heavy object, especially a car

2.to increase the price, rate, or number of something by a large amount

3.to put an illegal drug into your body using a needle; to be very excited or nervous, especially because you have taken an illegal drug

4.to refuse to obey instructions