We are fast approaching a time when the roar of a tiger in the wild will be replaced forever by silence.

老虎在旷野中的呼啸将永远被寂静所取代，这一天正迅速地向我们逼近。

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Tigers now occupy only 7% of their original range. We are fast approaching a time when the roar of a tiger in the wild will be replaced forever by silence.

老虎在旷野中的呼啸将永远被寂静所取代，这一天正迅速地向我们逼近。

youdao

She writes that no wild cat would indulge in such useless behavior: "A cat wants to catch the mouse, not chase it in circles forever."

他写道任何一只野猫都不会沉溺于这种无意义的行为：“一只野猫会去抓耗子而不是转来转去毫无休止的抓那些光点”。

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He said the goal of creating the park was to protect forever a wild area that cannot be replaced.

VOA: special.2009.06.30

And a gunfight had already taken place that would forever include Tombstone among the famous stories told about the American Wild West.

VOA: special.2010.02.15

Employees and management of companies acquired by Target are likely to cash in their chips sooner than later, knowing this wild-and-wooly bull market in Internet stocks cannot last forever.

FORBES: The buyout frenzy