Polyquinoxaline
[化] 聚喹喔啉
🗣️ 情景例句
How do you feel about the last part of the letter?
你对最后一部分有什么看法呢？
Mr. Smith is still in his fifties.
史密斯先生仍然50几岁。
By the way, before leaving this subject, I would like to add a few comments.
在结束这个问题之前顺便一提，我希望能再提出一些看法。