Exercise is the only way to get a flat stomach after having a baby.

产后只有通过锻炼才能使腹部收平。

《牛津词典》

This also means having a back up plan, in case one of you is sick, you get a flat tire and have no tube, etc.

这也意味着需要一个后备计划，以防你们中的一个不舒服，你的车胎漏气却没有备胎，等等类似的事情。

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If you are awaiting emergency help and the baby's head hasn't appeared, having the mother lie flat may slow delivery until help arrives.

如果你能来得及等到紧急救助的到来，而宝宝的头还没有出来，让妈妈平躺也许能减缓生产速度直到救护人员赶到。

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And think about it, I mean, it used to be having a flat-screen TV was a big deal, right?

WHITEHOUSE: Shared Responsibility and Shared Prosperity Town Hall

Taken to court by her building society, she was only saved from having her flat repossessed by a sympathetic judge.

BBC: NEWS | UK | Angel of Peckham's gift of giving

Cabinet Office Minister Francis Maude described the level of charity giving and volunteering as having "flat-lined" in the past decade.

BBC: David Cameron aims to boost Big Society