The clock is ticking.

台钟在滴答滴答地响。

《新英汉大辞典》

Now it's finally happened. And the clock is ticking.

而现在，日程终于发开始了。而且时间紧迫。

youdao

Even so, the clock is ticking, especially for tablets, where the competition will get fiercer.

尽管如此，还是必须争分夺秒，尤其是对平板电脑这种日新月异、竞争激烈的商品而言。

youdao

A senior U.S.official acknowledges the clock is ticking on showing the effectiveness of America's multibillion dollar attempt to rebuild Afghanistan.

VOA: standard.2009.09.04

ReCellular engineers have to learn the tricks on their own, while the clock is ticking.

FORBES: Use It Up, Wear It Out

And one last thing, just to make this point -- the clock is ticking.

WHITEHOUSE: The White House

Even so, the clock is ticking, especially for tablets, where the competition will get fiercer.

ECONOMIST: Microsoft and Intel