Perylene
二萘嵌苯
🔁 扩展释义
【化】 ╀
🗣️ 情景例句
Well, they didn't say anything for sure.
嗯， 他们没有任何确切的答覆。
Better say nothing than nothing to the purpose.
与其说话不中肯，不如一言不发好。
There is a new type of machine which can produce colour copies.
有一种新型的机器能够制作出彩色复印件。