convex table

例句：

1. 1. This concave table is perfect for a small gathering.
   这个凹面桌子非常适合小型聚会。
2. 2.The convex surface of the cup is smooth and easy to grip.
   杯子的凸面表面光滑，易于握持。
3. 3. The convex table in the exhibition hall is designed to showcase modern technology.
   展览厅中的凸面桌子设计用来展示现代科技。