do level best

• 竭尽全力；尽最大的努力

do level best的用法和样例：

例句

1. We should strain every nerve to do the work.
   我们应该竭尽全力来做这项工作。
2. He did his level best to please his father.
   他竭尽全力取悦父亲。
3. I will do my best to help you in every way.
   我会尽最大的努力在各方面帮助你。
4. We are resolved to do our utmost.
   我们下定决心要尽最大的努力。

词汇搭配

• do one's level best 全力以赴