Poly(ether-ketone)
[化] 聚醚酮
🗣️ 情景例句
I'm sorry for what I've done.
我为我的所作所为向你道歉。
To swing
打秋千
But even the mosquito has been subdued by attention to drainage and by chemical sprays.
然而即使蚊子，也由于我们注意清理污水和喷洒化学药品而被制服了。