所有其他非字符实体类型都被忽略，而且不进行检验，即使对于内部子集中的声明。

All other non-character entity types are ignored, and no validation is performed, even for declarations within the internal subset.

youdao

可以声明一个新的NAMESPACE常量，这隐式声明了一个字符数据类型的常量。

You can declare a new NAMESPACE constant, which is implicitly made a constant and from the character data type.

youdao

那个看上去费解的字符串声明了所需要的变量类型，我们稍后将说明它。

The cryptic-looking string declared the types of variables expected, and will be explained later.

youdao