As a user, before you even dive into Step 1, you must choose whether to check out as a guest or log in.

作为一个用户，在开始步骤1之前，必须要选择是作为客人结帐还是登录。

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Log out - if you're in communal space without logging out properly, people can get onto the machine you've just vacated and dive into your profiles.

退出登录——在公共场所的机器里，没有退出登录的话，你的个人信息就会暴露给别人。

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