Polyxylene
聚二甲苯; 聚二甲苯
🗣️ 情景例句
Everybody help yourselves.
大家请便吧。
I'm busy!
我在忙啦！
It is much cheaper to post or email a long report than to fax it.
邮寄或电子邮递一封长篇报告比传真要便宜得多。