Cyclododecatriene
环十二碳三烯
🗣️ 情景例句
That's right.
是的。
We'll exchange presents.
我们要交换礼物。
Really? So was my friend Bob White. Do you know him?
真的吗？我的朋友鲍勃·怀特也在中心学校。你认识他吗？