Dinitrate
二硝酸盐
🗣️ 情景例句
Well, in 1919.
是的，在1919年。
Please proceed with your presentation.
请开始你的简报。
They had laboured for three years to produce this floating work of art;
瑞典人辛辛苦苦干了3年才建成这件水上艺术品，