Phenylfluorone
苯基荧光酮
🗣️ 情景例句
Examinations are at hand.
考试在即。
Do you have any rooms?
你有房间吗？
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明，又迈进了一大步，因为这样一来，知识不仅能交流，而且能储存了。