"I only see a small number of yearling calves," Fischbach says.

菲施巴赫说：“我只看到了数量很少的幼海象。”

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Fischbach has been attaching satellite radio tags on the walruses to try to figure out how the animals are coping.

菲施巴赫将卫星信号签贴在海象身上试图弄清这些动物如何生存。

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Ephraim Fischbach, a physics professor at Purdue, was looking into the rate of radioactive decay of several isotopes as a possible source of random numbers generated without any human input.

普渡大学物理教授Ephraim Fischbach，将探测几种同位素的放射性衰变速率的方法作为一种没有人为输入因素干扰的产生随机数的可能方法。

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"It's the first time the same isotope has been used in two different experiments at two different labs, and it showed basically the same effect, " Prof Fischbach said.

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Dr. Fischbach cautioned that "it's going to take a long time" before new drugs might be available, because there remains much to sort out not only the interplay between genetics and bacteria but also the wide variations in the bacteria on different people's bodies.

WSJ: Gene Map of Body's Microbes Is New Health Tool