Xanthene ketone
[建] 二苯喃酮
🧩 词语组成解析
n. [化] (夹)氧杂蒽
ketone
['ki:toʊn]
n. 酮;
🗣️ 情景例句
The pictures you've taken are fabulous, Richard.
你拍的照片太精采了， Richard。
You have to study English, don't you?
你必须学英语，不是吗？
She serves as an impressive reminder of the great ships of past.
它给人们留下深刻的印象，使人们回忆起历史上的巨型帆船，