Coumarin-4
[化] 香豆素-4
🧩 词语组成解析
n. 香豆素, 氧杂萘邻酮\\n[化] 香豆素1,2-氧萘酮
🗣️ 情景例句
What shade do you recommend for me?
你给我推荐什么样的颜色？
Do you often do composition after school?
你常常在放学后做作文吗？
They crowned him king.
他们拥立他为国王。