Polynitroethylene
聚硝基乙烯
🗣️ 情景例句
you have so much energy and so many years of experience.
你精力这么好 ，又有这么多年的经验。
Experience keeps no school, she teaches her pupils singly.
亲身经验，才是经验。
I'm doing a word puzzle in this newspaper.
我在猜报纸上的字谜。