Visualize your test suite sorted into three layers, each layer representing a different type of developer test defined by how long it takes to run.
测试套件可以形象地分为三层，每一层代表一种不同的开发人员测试类型，该测试类型由其运行时间的长短决定。
Three values representing the filter for the default exchange rate type are also created in the AA_Prompts_Map parameter map as described in section 2.1.
另外还在2.1节中描述的AA_Prompts_Map参数映射中为default exchange rate type创建了三个表示过滤器的值。
Instead, it implements three different options for representing content: text-based XML encoding, JSON encoding, and opaque binary encoding, which is useful for things such as conveying JPEG files.
相反，它会为呈现的内容实现三种不同的选项：基于文本的XML编码，JSON编码和不透明的二进制编码，后者对于某些场景会非常有用，例如传递JPEG文件。
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