Enteramine
血清素, 5-羟色胺
🗣️ 情景例句
Then, when shall we sign the contract?
那么，我们什么时候签合同？
Beware of a silent dog and still water.
警惕无声之狗会咬人，平静之水会覆舟。
so America and the EU have been trying to reach a deal which would eliminate the need to double-test many products.
美国和欧洲一直在寻求达成协议，以便为许多产品取消双重检查。