Polyurethanes
(polyurethane 的复数) n. 聚氨酯\\n[化] 聚氨基甲酸酯; 聚氨酯
🗣️ 情景例句
Growing up without a mother is difficult.
在没有母亲的情况下长大不简单。
He washes dresses every day.
他每天都洗衣服。
I supposed him to be very clever but he was in fact a fool.
我以为他很聪明，其实他是个蠢货。