That's according to Daniel Sigman of Princeton, winner of a 2009 MacArthur "genius grant".
2009年麦克·阿瑟基金会天才奖得主、来自普林斯顿大学的丹尼尔·西格曼如是说。
Daniel Sigman: Algae require nitrogen to grow, and their bodies, in turn, fuel the rest of the ocean food web.
丹尼尔·西格曼：海藻生长过程中需要氮，而海藻本身为海洋食物链中的其他生物提供养分。
Sigman has been trying to piece together how efficiently tiny ocean plants - algae - were using nitrogen about 20,000 years ago.
西格曼博士致力于研究两万年前微型海洋植物海藻是如何高效利用氮元素的。
Top English psychologist Dr. Aric Sigman said we must prevent children under three from watching television or risk irreversibly damaging their health, the Daily Mail reported.
据英国《每日邮报》报道，英国顶尖心理学家埃里克·西格曼呼吁，孩子3岁之前应该禁看电视，否则会给孩子健康造成不可逆转的危害。
Top English psychologist Dr. Aric Sigman said we must prevent children under three from watching television or risk irreversibly damaging their health, the Daily Mail reported.
据英国《每日邮报》报道，英国顶尖心理学家埃里克·西格曼呼吁，孩子3岁之前应该禁看电视，否则会给孩子健康造成不可逆转的危害。
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