Polycoumarone
[化] 聚香豆酮; 聚氧杂茚
🗣️ 情景例句
All right, everybody.
各位， 你们好。
Tom's been feeling blue ever since his divorce.
自离婚以来，汤姆一直很忧郁。
She intends to make teaching her profession.
她想以教书为职业。