The static modifier that precedes $onlyOne ties the variable to the class itself.

$onlyOne 之前的静态修饰符将此变量关系到类本身。

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When an attribute does not have the static modifier, it is said to be an object attribute, as that property is unique for each instance of the class.

当一个属性不具有静态修饰符时，就称其是一个对象属性，因为该属性对类的每个实例都是惟一的。

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The problem is that programmers could accidentally write such code (say by mistakenly including a static modifier in a field declaration, due to copy-and-pasting).

问题是程序员可能会无意中编写这样的代码(比如，由于“复制和粘贴”操作，错误地在字段声明中包括静态修饰符)。

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To declare a static property, place the keyword static after the visibility modifier, directly in front of the property variable.

要声明静态属性，将关键字static放在可见度修饰符后面，直接位于属性变量前面。

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Once again, you should place the static keyword after the visibility modifier.

再次，应将static关键字放在可见度修饰符后。

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The Modifier class provides static methods and constants to decode class and member access modifiers.

Modifier类提供了静态方法和常量来对类和成员访问修饰符进行编码。

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The Modifier class provides static methods and constants to decode class and member access modifiers.

Modifier类提供了静态方法和常量来对类和成员访问修饰符进行编码。

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