Reciprocative
a. reciprocate（互给；互换）的变形
🗣️ 情景例句
I wasn't born yesterday.
我又不是三岁的孩子。
Please turn the light off when you leave.
离去时请随手关灯。
or even the universe itself, must in the nature of things 'wear out'.
甚至宇宙本身，从事物的本质上来说都会磨损掉"。