static symbol never referenced 变量定义未使用
That is a mysterious world, never static, establish the dreamland, have affect my behavior unconsciously.
那是个神秘的世界，永不静止，创造梦境，在不知不觉中影响我的行为。
Static routing implies that the routing rules never change.
静态的路由是指不能更改路由规则。
The other way to say it is, never define a global (static global) instance of a class whose constructor or destructor may throw exceptions.
换一种说法就是永远都不要为那些其构造函数和析构函数可能抛出异常的类定义全局(静态全局)实例。
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