Urethane
[化] 尿烷; 氨基甲酸乙酯; 乌拉坦
🗣️ 情景例句
Well said.
说得好。
What shall I send him for his Christmas?
我要送他什么东西作为圣诞礼物？
I must finish that first. But I think I can be free at six. May I come then?
00可能有空。我那时来可以吗？