She knew that time was slipping away.

她知道时间在飞逝。

《牛津词典》

We stand in silence, and there is an illusion of slipping back in time.

我们静静地站着，感觉自己回到了过去的时代。

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The hands on the clock were frozen, a reminder of time slipping away, stopped at the precise moment when my grandfather had ceased winding it.

那钟上的钟摆，使我想起匆匆流走的时光，钟的指针精确地停留在祖父停止给它上发条的时间。

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Now, with time slipping away, things could get very ugly very soon.

FORBES: Physicians Facing Medicare Payment Nightmare

It seems that DIRECTV has been slipping for some time and now with this week's rumor about DISH adding more HD channels this review couldn't have come at a better time for those considering a switch.

ENGADGET: I4U Reviews DISH's ViP 622 HD DVR [Update] HD

Another sign of the slowing economy is that the overall demand for small business loans in April was down by 5.4% , slipping for the first time in a year.

FORBES: Small Business Lending Drops In April