Backscratching
n. 为共同利益而互相利用
🗣️ 情景例句
when Susan and Richard were babies?
当Richard和Susan还很小时？
I think his fish is a little bigger than mine.
他的鱼似乎比我的大了一点。
The change between hot and cold temperatures makes the blood move around the shoulder and the damaged parts begin to repair themselves.
冷热交替使肩膀周围的血液循环，受伤的部位开始自己修复。