Nitrokalite
硝石
🗣️ 情景例句
He founded this company.
他创办了这家公司。
Could you tell me the cost of production per unit?
请你告诉我每件成品的生产成本好吗？
I'll have to check to see if we can handle that.
我得查查看我们是否付得了这么多。、