Undecene
[化] 十一碳烯
🗣️ 情景例句
What's the tuition for one year of college?
大学一年的学费是多少？
Can I have a second-class one way ticket to Chicago,please?
请给我一张去芝加哥的单程二等票好吗？
There was another unknown man.
还有一个不认识的人。