Polyether ketone ketone (pekk)

[化] 聚醚酮酮

🧩 词语组成解析

polyether
n. [化]聚醚,多醚
ketone ['ki:toʊn]
n. 酮;
ketone ['ki:toʊn]
n. 酮;

🗣️ 情景例句

There are thirty-three thousand three hundred and thirty-three feathers on that bird's throat.
那只画眉鸟的喉咙上有三万三千三百三十片羽毛。
Why are you walking so far?
你为什么走得这样快?
1 Make a list of 10 things which you like doing most.
1。列出一张你最喜欢做的10件事情的清单。
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