Dnn
[医][=1，5-dinitronaphthalene]1，5-二硝基萘
🗣️ 情景例句
Don't you have any hobbies, like stamp collecting or things like that?
你有什么爱好吗？像集邮之类的爱好？
Do you have a room available?
你们有空房间吗？
He marked all the bees that came to the nearby feeding place blue, and all the bees that went to the faraway place were marked red.
他把所有飞来近处喂食点的蜜蜂标上蓝色，飞往远处喂食点的蜜蜂标上红色。