"Do our best"或者Do everything in one's power.
造句例如：
1.I can't promise you the moon, but I'll do the best job I can.
我不能对你作无法兑现的许诺，但我将尽力而为。
2.Put your best foot forward and work on the assumption that there is anacceptable solution to every problem you are likely to face.
要尽力而为，要相信你可能遇到的每一个问题都会有一个适当的解决方案。
3.I've said we'll do our best.
我说了我们会尽力而为。
在力所能及的情况下我将尽力而为。
Do one's level best
尽力而为
I strive for the best, and I do the possible.
我尽力而为争取最佳。
Make the best of a Bad Bargain
已然吃亏,尽力而为
The situation cannot be helped, one must simply manage as best one can.
情况无可奈何，只好尽力而为。
Please do your best and oblige.
希尽力而为，则不胜感谢之至。
We can' t blame him, he did his best according to his lights.
我们不能责怪他，他已尽力而为了。
It's going to hard, but give it your best shot.
事情会很难，你尽力而为就是了。
All that you do, do with your might; things done by halves, are never right. ——Stoddard
凡事须尽力而为，半途而废者永无成就。——斯托达德