Definition: level and smooth, with no curved, high, or hollow parts Level: B1
溜冰场需要完全平坦。
An ice rink needs to be completely ___flat.
在平坦的表面上擀开面团。
Roll out the pastry on a ___flat surface.
许多乡村地区非常平坦。
Much of the countryside is very ___flat.
