Dnn
[医][=1，5-dinitronaphthalene]1，5-二硝基萘
🗣️ 情景例句
Maybe someone will find it.
也许会有人发现的。
We should weep for men at their birth and not a t their death.
我们应在人降生时流泪，而不该在人死亡时哭泣。
I argued that if I spent less time exhausting myself at exercises in the morning,
我辩解说，早晨少耗费精力锻炼，