Hexene
[化]己烯
🗣️ 情景例句
Littering is a serious offense in some countries.
乱扔垃圾在某些国家是严重的违法。
Could you give me some comments?
你有什么感想吗？
In the class there are two American girls. They are twins. Their names are Lily and Lucy.
在班上有两个美国女孩，他们是双胞胎，名字叫鲁茜、莉莉。