Tridecapeptide
十三肽
🗣️ 情景例句
I think we'd better head home.
我想我们最好上路回家啦。
I'm behind in my work.
我工作进度落后了。
This is my friend, Ann. Ann, this is Uncle Wang.
这是我的朋友安。安，这是王叔叔。