Polyurethanes
(polyurethane 的复数) n. 聚氨酯\\n[化] 聚氨基甲酸酯; 聚氨酯
🗣️ 情景例句
Well, it was great to see you again. Let's not wait this long next time.
可以再见到你真是太好了，希望我们下次见面不用等这么久。
Next week I must start my term paper for Poli Sci.
到下周，我必须着手写政治学的期末论文了。
What are you up to?
你在忙什么呢？