Dnn
[医][=1，5-dinitronaphthalene]1，5-二硝基萘
🗣️ 情景例句
and get right to the graduation party?
直接就是毕业派对？
He that will eat the nut must first crack the shell.
欲所得，必先劳。
Please tell Mr Hu that I am working hard on my Chinese.
请告诉胡先生，说我正在努力学习汉语。