Urethanes
聚氨酯橡胶
🗣️ 情景例句
He's such a workaholic that he doesn't know how to spend his leisure time.
他是个工作狂，以至于不懂得如何打发他的空闲时间。
The tongue is not steel yet it cuts.
舌头不是钢，伤人似刀剑。
'You should have declared that.
“你刚才应该申报，