Dinitromethane
二硝基甲烷
🗣️ 情景例句
Do you have a children's menu?
你们有儿童菜单吗？
The efficiency is greatly raised,and the intensity of labor is decreased.
工作效率大大地提高了，而劳动强度却降低了。
Here is another photograph.
这是另一张照片。