You can use that behavior to tell that the user is not online by having a scheduled agent check the timestamp and reset the user's status when it turns old.

您可以利用此行为来判断用户没有在线，通过使用预定的代理来检查时间戳，并在出现更新的时间戳时重置用户状态。

youdao

With new and more sophisticated apps coming online all the time, "executives who understand mobile user behavior and needs will be in demand."

随着日益成熟的新应用不断上线，“了解移动用户行为与需求的高管将拥有巨大的市场。”

youdao

The company recently began a trial in Brazil to gauge online user behavior so that it might better tailor its platform to user needs in that country, he said.

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Many companies now collect large datasets on consumer behavior, be it online search patterns or user demographics.

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