The result of this call is returned by the function literal.
调用的结果会被函数返回。
An expression to represent which related object should be returned by the function.
表示函数应该返回哪个相关对象的表达式。
Whatever string is returned by that function is then printed to the screen.
由此函数返回的任何字符串都会被打印到屏幕。
Whatever string is returned by that function is then printed to the screen.
由此函数返回的任何字符串都会被打印到屏幕。
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