thumb n. 拇指

finger n. 指针；手指

hit the gym 去健身房

hit the road上路

hit the book 看书

You are all thumbs.

你怎么这么笨手笨脚。

have a finger in the pie

介入到这个事情当中去

She always tries to keep up with the latest trend(s).

她一直跟上时代的潮流。