Graface
石墨-二硫化钼固体润滑剂
🗣️ 情景例句
If you can confirm that you wish to proceed with a distributorship of our company,
假如你能肯定你们愿意同我公司建立销售关系，
How many of these are you going to buy her?
你要买多少给她？
Mr. Smith is in charge of this class.
史密斯老师负责该班。