I'd like to invite you to dinner at my flat.

我想邀请你到我公寓吃饭。

youdao

There was a very small posy of flowers at my aunt's flat.

我姑姑的公寓里有很小一束花。

《柯林斯英汉双解大词典》

Hindsight is wonderful: from the walkway to my flat, I gaze out at the back end of a superstore atop the old waterway, and mourn for it.

事后回想是如此奇妙：从人行道到我的公寓，我向外注视矗立于旧河道之上的超级市场的后身，默默的追忆昔日运河。

youdao

After returning from a week trying to ski I thought I was the world's expert at falling flat on my face, going backwards when I should be going forwards and colliding into my nearest and dearest.

BBC: Peter Robinson takes the grandstand view

He flat out saved my life at least once, just from a little whistle or click or something.

BBC: Return to Vietnam

After trying my new jokes at my next gig, I was disappointed when they fell flat.

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