flat

把纸平铺在桌子上。

Lay the paper ___flat on the desk.

把地图平铺在地板上。

Spread the map ___flat on the floor.

表面必须平坦才能进行准确测量。

The surface needs to be ___flat for accurate measurements.

她被电缆绊倒，脸朝下摔倒了。

She tripped over the cable and fell ___flat on her face.

在比赛中，他绊了一下，在众人面前脸朝下摔倒了。

During the race, he stumbled and fell ___flat on his face in front of everyone.

他演讲中的所有笑话都没有达到效果。

All the jokes in his speech fell ___flat.

文化参观活动没有达到他们的期望。

The cultural visits fell ___flat compared to their expectations.

如果活动没有达到预期效果，可能会令人失望。

If the event falls ___flat, it can be disappointing.