make a push at的用法和样例：
- They were going at it for all they were worth, making the utmost possible efforts to do the work.
- You forfeit your chance for life at its fullest when you withhold your best effort in learning.
- We must make a push to get the job done.
- Lucy should push herself a little harder.
- make a push at 用最大努力(做某事)...