Nitropolyurethane
硝基聚氨酯
🗣️ 情景例句
Well, you've got my vote.
哦， 那我一定投你的票。
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
Why was that?
为什么呢？