Polyurethanes
(polyurethane 的复数) n. 聚氨酯\\n[化] 聚氨基甲酸酯; 聚氨酯
🗣️ 情景例句
you know how Dad is always talking about
知道爸爸时常谈起
The paint bucket fell down on his head.
油漆桶扣在了他的头上。
That might cost a little more.
那样恐怕要多花点钱。