Backscratching
n. 为共同利益而互相利用
🗣️ 情景例句
Oh, yes. Are his models here?
噢 ，对啦。 他的模型在这里吗？
If you have no questions, may I go on to the next stage?
如果你们没有问题了，我可以进行下一阶段吗？
I have 4 books and 2 magazines to check out.
我有4本书和2本杂志要借。