And because my brother had been kind to her, she felt that one good turn deserves another.

而且因为我的兄弟对她已经是类型，她感觉那一个好旋转该得到另外一。

Father: But she helped you with your homework yesterday. And one good turn deserves another.

爸爸：但是她昨天帮你完成作业的啊。要知恩图报。

If he does you a favor, you should do him a favor. One good turn deserves another.

若是他帮你的忙，那么你就应帮他的忙，以德报德嘛。

One good turn deserves another. What the old man and the little boy did for one another proved this adage .

善有善报。老人和小孩为对方所做的证明了这一谚语。

One good turn deserves another. What the old man did for the little boy and what the little boy did for the old man proved this rule.

善有善报。老人为小孩所做的以及和小孩为老人所做的证明了这一规则。