If one player does not perform to the best of his or her ability, the team is handicapped.

任何一名队员不全力以赴，全队也会受到拖累。

He completed the job to the best of his ability.

【ability】他尽全力完成了工作。

I’m sure he’ll do the work to the best of his ability.

【best】我相信他会尽己所能做好这项工作。

I think that Ivan the third is a very interesting person to say the least, and I think he made decisions to the best of his ability for himself as a ruler and for Russian people as well.

我认为伊凡三世至少可以说是一个非常有趣的人，我认为他为自己和俄罗斯人民做了他力所能及的决定。

It goes on or continues to say that the new president will work to the best of his or her ability, or as much as he or she can, to preserve, protect, and defend the Constitution.

它继续或继续说，新总统将尽其所能，或尽其所能，维护、保护和捍卫宪法。