第一个是分类帐余额；第二个是可用余额，可用余额是从分类帐余额中除去不可用的金额。

The first is the ledger balance; the second is the available balance, which is the ledger balance with any holds taken into account.

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默认情况下，操作栏会出现在你的活动窗口的顶部，略有减少了可用空间为您的活动布局的其余部分的金额。

By default, the action bar appears at the top of your activity window, slightly reducing the amount of space available for the rest of your activity's layout.

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另外，账龄分析表还可用作预估无法收回的账款金额的基础。

In addition, the schedule is used as the basis for estimating the amount of uncollectible accounts.

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