Polyurethanes
(polyurethane 的復數) n. 聚氨酯\\n[化] 聚氨基甲酸酯; 聚氨酯
??? 情景例句
Well, it's nice to have you with us again.
噢 ，非常高興你們又來了。
Sport is sweetest when there be no spectators.
旁邊無觀眾，運動最輕松。
Time is running out.
沒時間了。