Serotonin
n. 血清素\\n[化] 5-羟色胺
🗣️ 情景例句
Susan's like a mother to Michelle. Susan
就像是Michelle的母亲。
Well fed, wed bred.
衣食足，知荣辱。
It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day.
它们一年中消灭了多少昆虫，我们简直无法猜测，它们是吃不饱的动物，不满意一日三餐。