Thrombotonin
5-羟色胺
🗣️ 情景例句
even fifty years later.
五十年之后还是这样。
The post office is right on the corner, You can't miss it.
那邮局就在转角的地方，很好找。
Look!There's an ice cream man.
瞧！有个卖冰淇淋的。