We also have an idiom: " If you scratch my back, I'll scratch yours."

“如果你帮我，我就会帮你。”

I'm thinking, you scratch my back, I scratch yours.

我的想法是，你帮我挠背，我也帮你挠背。

The other route to co-operation is reciprocal altruism of the you scratch my back and I'll scratch yours variety.

另一种合作方式是互惠利他主义，即“你帮我，我帮你”。

Get the best men for the job instead of old chums, party hacks, and you scratch my back and I'll scratch yours.

任命贤才，而不让那些小集团和党棍送来送去。

But at a very basic level - it appears mongoose society also follows the rule, You scratch my back, and I'll scratch yours.

但从非常基础的层面来说，似乎侏獴社会也遵循“投桃报李”这一规则。

You scratch my back and I'll scratch yours.

你挠我的背，我也挠你的。

I mean, you scratch my back, I scratch yours.

你帮帮我 我帮帮你。

Literally, you scratch my back and I'll scratch yours, and I might pick a few lice off while I'm at it.

从字面上看， 你挠我的背， 我也挠你的，我可能会在抓挠的时候摘下几只虱子。

This is an old expression: " You scratch my back and I'll scratch yours." Your " back" here means the back of your body, between your head and your waist.

” 这里的“背” 是指身体的后背， 在头和腰之间。