When we put our best foot forward, we want to impress someone and gain their approval.

当我们表现出自己最佳的一面时，我们是想给别人留下深刻印象，获得他们的认可。

In British English, if we put our best foot forward then we try as hard as possible to do something, even when it's really difficult or we're really tired.

在英式英语中，如果我们“全力以赴”，表示我们尽最大努力去做某事，即使它真的很难或者我们真的很累。