多用户登陆让你更方便的在一个浏览器中切换使用多个Google账号。

Multiple account sign-in will allow you to more easily handle multiple Google accounts via a single browser.

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这是合理的行为，对于许多用户来说，因为他们期望切换列将反转的项目集。

This is reasonable behavior for many users, because they expect that toggling a column will reverse the set of items.

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