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The alliance of 40 organizations worldwide issued the statement upon news that Siberian tigers may have suffered a serious drop in Numbers over the past four years.

由全球40个组织组成的这一联盟在一项声明中说，东北虎的数量在过去四十年中下降剧烈。

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Yet the row over the drop in the Mekong seems under control.

然而，关于湄公河流量降低的问题似乎得到控制。

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He points to a big drop in the number of planned job cuts announced by employers over the past six months.

VOA: special.2010.07.02

But many experts say Mr.Saakashvili's drop in popularity over the years indicates a strong disillusionment with the achievements of the Rose Revolution.

VOA: standard.2009.09.01

Where tradable fishing quotas have been issued, the result has been a drop in over-fishing.

ECONOMIST: Environmental economics: Rescuing environmentalism | The

The impact of rich nations worldwide is clear in figures showing that the steepest drop in biodiversity over the past 40 years has occurred in poorer countries.

CNN: Earth 'going downhill' as consumption rises, report says

That, of course, coincides with a sharp drop in yields over the same period.

FORBES: In low-rate environment, more "high yield" bond issuers forge into 4% territory