Dnn
[医][=1，5-dinitronaphthalene]1，5-二硝基萘
🗣️ 情景例句
you need to work at it, Grandpa.
你得常练它， 爷爷。
What's your favourite pastime?
你喜爱的消遣是什么？
She knew she was near the shore because the light was high up on the cliffs.
知道自己已经接近岸边了，因为那灯光是在高高的峭壁上。