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1·Do you think that services provided by OCL are adequate or not?

你觉得八达通公司的服务是否足够？

2·Generate the necessary constraint in OCL, as shown in Figure 13.

用ocl生成必要的约束，如图13所示。

3·OCL (Object Constraint Language) was developed to fill this gap.

您可以开发ocl(对象约束语言)来填补这个空白。

4·Now we need something to display the result of the OCL Expression.

现在需要用一个控件显示ocl Expression的结果。

5·Do you think that OCL needs to improve the quality of its services or not?

你觉得八达通公司是否需要改善服务的质素？

6·There are not many applications that can interpret constraints written in OCL.

有很多程序不能理解以ocl写成的约束。

7·The supported version of the OCL is 2.0, matching the supported UML definition (2.1).

OCL所支持的版本为2.0，与uml定义所支持的相匹配(2.1)。

8·To create a precise and complete model, we need both UML diagrams and OCL expressions.

为了创建一个精确且完整的模型，我们需要 UML 图表及 OCL 表达式。

9·A proven approach to add precision to a model is through the use of constraints and OCL.

向模型添加精确度的一种已证实的方法是通过使用约束和OCL。

10·Here is an example of an OCL query, using the optional OCL report manifest entries.

下面是一个OCL查询的例子，使用可选择的OCL报告显示入口。