我们用 as flat as a pancake 这个短语来形容某物特别平坦。

例句

It's a perfect day for sailing because the sea is as flat as a pancake.

Cycling around here is easy, the countryside is as flat as a pancake.

请注意

短语 fall flat on your face 的字面意思是 “摔趴下脸贴在地上”。我们可以用这个短语来形容做某事失败了或因做错事情而感到尴尬、不体面。

例句

If we don't get any funding, this building project will fall flat on its face.