Perylene
二萘嵌苯
🔁 扩展释义
【化】 ╀
🗣️ 情景例句
for giving me a passing grade.
给我及格分数。
John is not forty-five yet,is he?
约翰不够45岁,是吗？
Once, however, it failed to give the correct time.
然而有一次，它却把时间报错。