附加账户是用来增加被调整账户的余额，以求得被调整账户实际余额的账户。这类账户同抵减账户的调整方式恰好相反，即将被调整账户的期末余额与调整账户的期末余额相加，得出被调整账户的实有额。附加账户的特点则是被调整账户的性质和期末余额方向与调整账户一致。
注意，在本例中这个表单可以执行多个活动：现有用户可以登录，新用户可以通过输入附加账户信息进行注册。
In this example, notice that multiple actions can be taken with this one form: An existing user can sign in, and a new user can register by entering additional account information.
这个表单由6个页面组成，用户通过一些附加信息的选择从而进行他们账户的设置。
The form consists of 6 pages where users are lead from setting their account to providing additional details about their preferences.
微软想只有Xbox Live的金账户才能享受附加的内容服务，即使这些内容本身也是要收费的。
It wants to ensure that only those paying for Xbox Live Gold accounts can access its additional content services and even then there is usually a charge on top to get access to those.
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