Coumarin
n. 香豆素, 氧杂萘邻酮\\n[化] 香豆素1,2-氧萘酮
🗣️ 情景例句
I'll have to go home.
我必须回家一趟。
I have no secret of success but hard work.
成功无秘诀，只是努力干。
Well done, everyone! she smiled.
“你们个个表现出色！”她笑了