这个男孩不得不用尽全力把树拔了出来。

The boy had to use all his strength to pull the tree out.

youdao

尽管有人可能会认为一个人不用那么全力以赴也能完成一件工作，但这是不正确的。

Although one might think that one can complete a job without sparing any effort, this is never true.

youdao

更不用说杰克逊已年满50，而且在彩排时多半不会尽全力表演。

That's not to mention that Jackson was fifty years old and, because he was in rehearsal, was probably not performing "full out."

youdao