"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。
