Now implement the withdraw method. The Account class should look like Listing 7
现在实施withdraw方法。
For example, a bank - account class might have a method to calculate a balance.
例如，一个银行帐号类可能具有一个计算余额的方法。
Consider the example of an authentication policy for the Account class shown in Figure 1.
请考虑图1所示的account类的授权策略这样一个示例。
For now, the poor and lower-middle class together account for 75% of total spending.
目前，穷人和中低阶层占消费总数的75%。
The Bristol team, even took into account factors such as social class.
布里斯托尔团队甚至将社会阶层因素的影响考虑到智商测评内。
Next you'll update the patient class (patient.rb) to account for the new database field.
接下来需要修改patient类(patient . rb)以便容纳新增的数据库字段。
You could then use class diagrams to describe different types of account and their relationships.
然后，您可以使用类别图表来描述不同类型的帐户及其关联性。
As an example, consider a simple class intended to represent a bank account.
例如，考虑一个简单的表示银行账户的类。
Please set up an account before the first day of class.
请在第一天上课之前安排申请好有关帐号。
In-class presentations account for most of your grade.
课堂上的表现占成绩的大部分。
The teacher called Tom to account for his repeated absence from class.
老师要求汤姆说明他一再缺课的理由。
Presentations will take into account required and supplemental reading for each class session.
报告内容要顾及每堂课的必读和补充阅读材料。
Participation in class will account for one-third of the grade.
参与课程占总成绩的三分之一。
Please account for your being late for class.
请解释你上课迟到的原因。
Please account for your being late for class.
请解释你上课迟到的原因。
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