Dnn
[医][=1，5-dinitronaphthalene]1，5-二硝基萘
🗣️ 情景例句
Let's see some action!
赶快行动起来吧！
An old poacher makes the best keeper.
老偷猎者是最好的看守人。
At the end of the concert, there was a great applause.
音乐会结束时，响起了热烈的掌声。