Urethane
[化] 尿烷; 氨基甲酸乙酯; 乌拉坦
🗣️ 情景例句
Strike while the iron is hot.
趁热打铁。
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
We offer a discount for large orders.
我们对大量订购有打折。