"The spirit is high, back to normal," "The whole village has pulled together to help each other.

VOA: standard.2009.10.04

What it mean is "let us" and it's pulled together in the simpler "let's."

当它指“let us”的时候，就可以缩写为“let's”。

Let's 课堂 - SpeakingMax英语口语达人