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

VOA: special.2010.07.06

The kind of battle I've been describing to you, a nice flat field, two armies coming at each other, there's not much you can do in the way of trickery, and so you can take a high tone and say, anybody who fights any other way is a no good coward.

我向你们描述的这种战争,土地平坦开阔,两军对垒,没有多大机会使用奸计,所以你能大声地说,谁在战争中使奸就是胆小的懦夫

耶鲁公开课 - 古希腊历史简介课程节选

Well, there're different websites you can go on to find a flat.

有很多网站，你可以去网站上找公寓。

刚来伦敦的时候 - SpeakingMax英语口语达人

However,snow can become hard and flat as it becomes older or if there have been strong winds.

VOA: special.2010.01.05

So, you have to imagine that this thing started with these guys back in their camp and the other army back in its camp, and they both have to agree that they want to have a battle, for a battle to take place, and they will have picked a place that is flat where they can do what they're doing.

所以事情是这样的,你得想象一下,一群人各属于不同阵营,他们都同意开战,为了进行战斗,他们需要挑选一块平地,以供双方的方阵摆开架势

耶鲁公开课 - 古希腊历史简介课程节选

Hamburg parsley has flat leaves that can be used for the same purposes as other parsley.

VOA: special.2009.06.02

From high in the air, visitors can clearly see the third area of the park -- a high broad flat rock known as the Island in the Sky.

VOA: special.2009.04.15

It can be flat or raised.

VOA: special.2010.07.06