Nitropolyurethane
硝基聚氨酯
🗣️ 情景例句
Well, I mean
我的意思是
To know how to wait is the great secret of success.
懂得如何等待是成功的秘诀。
At that moment, everybody began to laugh and sing.
此时，大家已经笑了起来，同时唱起了歌。