get up steam
v. 振作精神；增高气压 ；(车)渐渐加速
例句与用法：
You must get up steam.
你必须打起精神来。
If you get up steam with your study, you will succeed
如果你发奋学习，你会成功的。
Get up steam, and you will be sure to overcome the difficulties
打起精神来，你一定会克服这些困难的。
The train has to get up steam again after a stop.
火车停了以后，启动时又得慢慢加速。