Undecylene
十一碳烯
🗣️ 情景例句
Carl, does your throat hurt?
Carl，你喉咙痛吗？
I guess I've outgrown this pair of trousers.
我想这条裤子对我来说小了。
CUSTOMS OFFICER: Are your friends Danish, too?
你们的朋友也是丹麦人吗？