没有人知道白藜芦醇确切的作用机理，不过科学家们认为，它可以激活一系列的基因，对人体的各项功能造成连锁反应。
No one knows exactly how resveratrol works, but scientists believe it activates a wide range of genes, creating a cascade-like effect on a variety of body functions.
手机版支持连锁呼叫（call chains）功能，并且你可以选择拨打电话时显示的号码。
Besides call chains, another nice feature of Ribbit Mobile is that you can choose which number will appear on your contacts' phones when you call, even if you are calling from your computer.
目前，这一测试功能只提供给少数的广告客户。这些被挑中的广告客户可能是连锁酒店，因为它们可以同时出现在一张地图上。
The test is also currently only available to a limited number of advertisers, presumably those with a chain of properties which can be included in a useful way on a map.
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