convex side造句

例句与造句

1. 2 the knife , which is shaped like a crescent , that cuts with the convex side , falls from a less height , and that is all the difference
   那把刀是新月形的，刀口向外凸出，刀上的坠子份量较轻，全部差别只在于此。
2. It's difficult to find convex side in a sentence. 用convex side造句挺难的