参加次类活动之前考虑一下你希望从中获得什么。
Before going to such an event, think about what you hope to get out of attending. Is it general knowledge?
人们通常所说的“范围副词”，应分属于四个不同的副词次类。
Adverbs of sphere ", as they are often called, should go to four different adverb sub-classes."
如果您想要弄清楚发生了什么，打开JConsole，单击Classes选项卡，过一段时间查看一次类计数。
If you want to find out what's going on, open JConsole, click the Classes TAB, and keep a lazy eye on the class count as time goes by.
享用一次含有柑橘类的浪漫沙拉，如粉红葡萄柚或橘子，或使用柠檬和酸橙制成的调味品。
Enjoy a romantic salad that incorporates citrus, like pink grapefruit or mandarin oranges, or use a dressing made with lemon and lime.
我想我可以一次生成类源代码，并让开发人员添加他们的业务逻辑，但是如果我必须重新生成源代码，如何才能避免改写那些业务逻辑呢？
I suppose I could generate the class source once and let the developers add their business logic, but how can I keep that logic from being written over if I have to regenerate?
这项工作之所以放到构造函数中来做，是为了只执行一次；随后，将从方法缓存中重用这个类。
This work is done in the constructor so that it is only performed once; subsequently, this class will be reused from the method cache.
创建类的过程中，类的所有属性和方法只设置一次。
During class creation, attributes and methods of classes are set once and for all.
单一实例指的是旨在让应用程序中一次只存在一个实例的类。
Singletons are classes that are designed to have only one instance existing at a time in an application.
由于ID对于特定类是相同的，因此您只需要查找一次，然后便可重复使用。
Because the IDs are the same for a given class, you should look them up once and then reuse them.
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.
这是第五次阿波罗载人航天计划，也是第三人类的探月旅行。
It was the fifth human spaceflight of Project Apollo and the third human voyage to the Moon.
例如，同样的类不会添加两次，即使它是从许多不同的位置装载的。
For example, the same class is never added twice, even if it is loaded from many different locations.
请注意可以用惰性方式执行类装入，所以类装入过程的某些部分可能在第一次使用类的时候才执行，而不是在装入时执行。
Note that class loading can be performed in a lazy manner and therefore some parts of the class loading process may be done on first use of the class rather than at load time.
在六个月的使用期类，我做过三次完整恢复，每一次恢复都让我损失六到八个小时的工作。
In six months of using SuperMemo, I had to restore from a full backup three times, each time losing six to eight hours of work.
可以利用反射，在第一次把目标程序的类文件装入JVM 之后，创建这种类型的模型。
You can build a model of this type by using reflection, after first loading the target program's class files into the JVM.
除了列出一张免费软件名单，我们还将对同一分类的某些收费软件来一次对比研究。
Aside from listing the free Apps, we will also make a comparison with some popular premium software in the same category.
在任何接触性传染病的传播中，每一次传染都涉及两类人，一类是已患病者，一类是未患病者。
In the spread of any contagious disease, each act of infection has two parties, one who already has the disease and one who does not.
根据JAX -RS规范，默认情况下，提供者和资源类为每个JAX - RS应用程序实例化一次。
According to the JAX-RS specification, by default, provider and resource classes are instantiated once for each JAX-RS application.
色彩按照惯例被显示在色环中，从中我们可以将所有颜色分为三类：基色，次生色和三次色。
Colors are traditionally shown in a color wheel, and from this wheel, we can separate colors into three main groups: primary, secondary and tertiary.
自从集合框架初次出现在J2SE 1.2 中以来，人们第一次对实用工具类进行了更改。
This change to the utility class is the first since the Collections Framework debuted in J2SE 1.2.
次贷危机开始向其他类资产甚至整个市场蔓延。
The crisis has been spreading across asset classes and markets globally.
针对此项法案的任何违规都将被计为一次C类罪行，面临最高15天监禁和高达300美元（仍不算高）的罚款。
Any violation of this law will count as a class C misdemeanor, carrying a maximum penalty of up to 15 days in jail and a fine of up to $300, still rather low.
最近一次注册类世博会是2005年日本爱知世博会。
The recent Registered International Exhibition is Expo 2005 Aichi Japan .
粘贴调用两次，它的结构应该和图15类似。
Paste the call twice, so that it looks similar to the structure shown in Figure 15.
英国十八世纪中叶第一次出现了演出非戏剧类作品的建筑。
In England in the middle of the eighteenth century, buildings first were built for the performance of nontheatrical musical works.
如果您在编写一个只使用一次就丢掉的类——比如测试一个API的类——则无需将它放到包中。
If you're just writing a single class to test your intuition about an API and you will throw it away immediately after running it once, then you don't have to put it in a package.
在请求信封的节点输入文本pen，第3次发送请求，但是使用不同的类名。
Enter the text pen in node of the request envelop and send the request for a third time, but with different category name.
为了进行简单的计时测试，我调用run方法两次，对于清单1holderbean类中的每个属性调用一次。
For a simple timing test, I call the run method twice, once for each of the properties in the Listing 1 HolderBean class.
为了进行简单的计时测试，我调用run方法两次，对于清单1holderbean类中的每个属性调用一次。
For a simple timing test, I call the run method twice, once for each of the properties in the Listing 1 HolderBean class.
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