Polyetherchloride
[化] 聚氯醚
??? 情景例句
Are you worried?
你擔(dān)心嗎
One barking dog sets all street a-barking.
一狗吠聲響，狗吠滿街坊。
For one thing, being a problem gives you a certain identity,
因?yàn)檫@至少使我得到了某種承認(rèn)，