Definition: level and smooth, with no high, raised, or round 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.
东安格利亚的大部分乡村非常平坦。
Much of the countryside in East Anglia is very ___flat.
