Like its global cousin, a class constant is immutable once defined.
与全局属性一样，类常量一旦定义就不可更改。
There are different options for calling a namespaced function, class, or constant.
可以使用很多种方法调用带有名称空间的函数、类或常量。
You declare a class constant with the const keyword.
用const关键字声明类常量。
Or are there other mechanisms how a Class entry may get into the constant pool?
或者有其他机制类条目可以进入常量池吗？
His constant blunders made him the laughing-stock of the whole class.
他总是出错，成了全班的笑柄。
His constant blunders made him the laughing - stock of the whole class.
他总是出错，成了全班的笑柄。
His constant blunders made him the laughing - stock of the whole class.
他总是出错，成了全班的笑柄。
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