do your best
US /duː jʊər bɛst/
UK /duː jʊər bɛst/

1.
尽力而为, 竭尽全力
to try as hard as you can; to make the greatest possible effort
:
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Just do your best, and don't worry about the outcome.
只管尽力而为,不要担心结果。
•
I know you're nervous, but I'm sure you'll do your best.
我知道你很紧张,但我相信你会尽力而为的。