Flurry estimates that the average lifetime for a game is about 3 months.

Flurry估计每个游戏的平均生命周期在3个月左右。

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That makes 243 hours a year, or more than a full year in an average lifetime.

一年就是243个小时，一生就是365天以上。

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The average lifetime and lifetime variance of these systems are compared.

比较了它们的平均寿命和寿命方差。

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Then, using the average lifetime value as a baseline, you can tally up the differences in key areas for your group of loyal, enthusiastic customers.

FORBES: Calculating The Economics Of Loyalty

Among pages like Major Retailer, Samsung Mobile, and Major Financial Services brand, paid media can amplify average lifetime reach of all page posts in a week by between two and 24 times.

FORBES: Facebook: Yes, Our Ads Work, Chapter 16

In Roman times only the very richest would have the ability to make such a journey: the average working lifetime simply did not contain enough income to finance such a journey.

FORBES: Roman Travel Speeds: An Excellent New Toy