在美国，在线时间和广告费用之间存在较大的不一致。

In the US, there is a big mismatch between time spent online and AD dollars.

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我们的站点上有一个页面包含了在线时间最长的用户列表。

We have a page on our site with a list of the users who spend the greatest amount of time online.

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他们每周会访问5次社交网络，每天登录4次，总计在线时间为一个小时。

They go to social networking sites 5 days per week and check in 4 times a day for a total of an hour per day.

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