Metenkephalin
n. [生化]蛋内啡肽
🗣️ 情景例句
... Oh ... I see.... Please, I know he wants to talk to you....
……啊……我懂。……麻烦 我知道他想跟 说话。
We can't wait any longer.
我们不能再等了。
However, rescue operations are proving difficult.
然而，事实证明营救工作非常困难。