Flurry tracked nearly 3 million active users of eBook apps in July, up from just around half a million in March.

Flurry在七月跟踪了电子书应用程序的300万名活跃用户，而这一数字在三月仅为50万。

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Researchers from the Albert Einstein College of Medicine in New York tracked the health of more than 500 elderly men and women for four-and-a-half years.

纽约艾尔·伯特·爱因斯坦医学院(albert Einstein College of Medicine)的研究人员在四年半时间里跟踪调查了500名以上老年男性和女性的健康状况。

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During totality, the Moon tracked through the northern part of the Earth's dark umbral shadow, so the southern half appeared considerably darker than the northern part.

在月全食的过程中，月亮会经过地球本影的北部，因此月亮下半部分会比上半部分暗一些。

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Although the biggest chunk of those outflows came from a single gold ETF (guess which one), well over half the gold funds tracked by EPFR Global failed to take in fresh money.

FORBES: Gold Funds Decline Most In Last Week Of February

Despite assurances that financial transactions on the sites were secure, more than half the sites that MarkMonitor tracked offered no protection of users' credit card data.

FORBES: Brandjacking Big Pharma

In the second half of 2009, the APWG tracked 126, 698 fake sites aimed at tricking users into giving up sensitive personal information such as credit card numbers or infecting them with malicious software.

FORBES: "Avalanche" Gang Responsible For Two Thirds Of Phishing Attacks