There are at least two classes of these receptors, which have been designated A1 and A2.
这些受体至少有两类，分别被命名为A1和A2。
Aeroliths are further subdivided into two classes: chondrites and achondrites.
陨石进一步细分为两类：球粒状陨石和无球粒陨石。
Now you want to link these two classes.
现在要将这两个类链接起来。
Do you have to see them for two classes?
需要看两节课吗？
These two classes are shown in Figure 4.
这两个类如图4所示。
These two classes have a very similar object model.
这两个类有着非常相似的对象模型。
Save and compile the two classes before continuing.
进行下一步之前，保存和编译两个类。
There are really two classes of methods represented.
实际上有两类方法。
I only had to write two classes to launch XM from Eclipse.
要从eclipse启动XM，我只需编写两个类。
The example application is simple and consists of two classes
范例应用程序比较简单，它由两个类组成
In Listing 3, you can see the same two classes defined in Ruby.
在清单3中，可以看到用Ruby定义的这两个类。
For these reasons educated men then fell mainly into two classes.
因为这些缘故，受过教育的人就主要分成两类。
Listing 3 and Listing 4 show the sample code for the two classes.
清单3与清单4展示了这两个类的代码范例。
Here's an example involving polymorphic recursion across two classes.
下面的示例涉及两个类之间的多态递归。
The returned result could be an instance of either of the two classes.
返回的结果可能是其中一个类的实例。
First, let us differentiate between these two classes of companies.
首先让我们来区分这两种公司。
The bulk of the work in your GWT procedure call happens in two classes.
GWT过程调用中的大部分工作都是在两个类中进行的。
The latter two classes represent business domain-driven example classes.
后两个类代表了业务域驱动示例类。
The relation between the two classes is also represented in this diagram.
图中表示了这两种类间的关系。
When finished editing these two classes, save them and rebuild the project.
编辑完这两个类后，保存并重新编译项目。
To understand the JSTL examples, then, only these two classes are important.
这样，对于理解JSTL示例而言，只有这两个类比较重要。
These two classes — pattern and Matcher — are the whole pattern-matching library.
这两个类(Pattern与Matcher)就是整个模式匹配库。
This is a relatively simple construct consisting of one interface and two classes.
这是一个相对简单的结构，只包含一个界面和两个类。
How do I represent a one-to-many, or many-to-many, relationship between two classes?
怎样表示两个类之间一对多或多对多的关系？
Let us consider a scenario in which there are two classes of traffic, gold and bronze.
我们来考虑一个场景，其中有两类请求流，gold和bronze。
Add a One-to-One Association relationship between these two classes, as shown in Figure 4.
在这两个类间添加一个一对一的关联关系，如图4所示。
A security and access control model that distinguishes between these two classes of users.
区分上述两类用户的安全和访问控制模型。
Next time, I'll show how to add the relations between the two classes to finish the example.
下一次，我将展示如何在两个类之间添加关系，从而完成这个示例。
Next time, I'll show how to add the relations between the two classes to finish the example.
下一次，我将展示如何在两个类之间添加关系，从而完成这个示例。
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