Pentone
缬烯炔, 异戊烯炔
🗣️ 情景例句
I don't like the way you are treating me.
我不喜欢你对待我的方式。
Do you ever work at the factory on Sunday?
你曾经在星期日在工厂工作吗？
My name's Ling Feng.
我叫凌峰。