Icosane
二十碳烷
🗣️ 情景例句
You must've come home very late.
一定很晚才回家。
I want to welcome you all here for the fourth annual meeting of our Asian sales staff.
欢迎所有来参加我们亚洲推销员第四届年会的代表。
Close the door after you，please.
请随手关门。