Lessoned
n. 教训；课\\nvt. 教训；上课
🗣️ 情景例句
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
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？
Yes, we have been interested in new system.
是的，我们对新系统很感兴趣。