The sea by then was as flat as a pancake.大海当时风平浪静。The land there is as flat as a pancake.那里的地势非常平坦。The land in that area is as flat as a pancake.那个地区地势平坦如砥。The tire was flat as a pancake.这个轮胎一点气都没有了。My home state of Illinois is flat as a pancake.我的家乡伊利诺伊州地势极为平坦。