Polycoumarone
[化] 聚香豆酮; 聚氧杂茚
🗣️ 情景例句
Let's get engaged.
我们订婚吗？
Pigs may fly,but they are very unlikely birds.
猪儿纵会飞，终究不是鸟。
Captain Alison will set out at eight o'clock, so we'll have plenty of time.
艾利森船长将于8点钟启航，因此我们有充裕的时间。