Polypropylene
n. 聚丙烯\\n[化] 聚丙烯
🗣️ 情景例句
No problem. I'm glad to help.
小事情，我很高兴这样做。
Example is better than precept.
言教不如身教。
Boxing matches were very popular in England two hundred years ago.
两百年前，拳击比赛在英国非常盛行。