People driving during a tornado are told to find low ground and lay flat,facedown, with their hands covering their head.

VOA: special.2011.04.19

One of these classrooms in this building in another classrooms again is flat classrooms with thirteen tables and a lot of nice space between them.

这栋楼里的一间教室,是另外一种教室,有13张桌子的扁平型教室,之间还有足够的空间。

麻省理工公开课 - 媒体、教育、市场课程节选

They can develop as flat, discolored areas of skin or as raised growths, often with a rough surface.

VOA: special.2010.07.06

The artist draws an image with oily ink onto a piece of stone or other flat surface.

VOA: special.2009.09.02

The runway is built on a flat stretch of land on a hill, with a sheer drop on both sides.

VOA: standard.2010.05.23