Polyether ketone ketone (pekk)
[化] 聚醚酮酮
🧩 词语组成解析
n. [化]聚醚,多醚
ketone
['ki:toʊn]
n. 酮;
ketone
['ki:toʊn]
n. 酮;
🗣️ 情景例句
But I'm still a little worried about you, Ellen.
但我还是有点牵挂着你， Ellen。
Where are you headed?
你要到哪里去？
What are those?
那些是什么？