Perylene
二萘嵌苯
🔁 扩展释义
【化】 ╀
🗣️ 情景例句
Fine, thank you.
很好， 谢谢你 。
You can use quarters, dimes and nickels.
你可以使用2角5分、1角和5分三种硬币。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.
历史学家迄今认为日历是随农业的问世而出现的，因为当时人们面临着了解四季的实际需要，