This is because the surface of the earth is not flat but round.

这是因为地球的表面是圆的而不是平的。

youdao

On a floured surface, roll the crust mixture into a round shape.

在盘表面放上面粉，然后把混合物做成圆形。

youdao

On a floured surface, roll the crust mixture into a round shape.

在盘表面放上面粉，然后把混合物做成圆形。

youdao