But t is not known to redeclare clone as public, so cloning is also out.

但是重新声明clone为public并不知道T，因此克隆也无济于事。

youdao

Also, the definition of reference remains simple: it doesn't have to redeclare any of the content that it shares with topic.

此外，reference的定义仍然很简单，不需要声明与topic相同的任何内容。

youdao

They are defined in every JSP page and used behind the scenes by the container whether you declare them or not — although you cannot redeclare them.

不论您是否声明它们——虽然您不能重复声明它们，它们在每个jsp页面当中都进行定义，并且在后台由容器使用。

youdao

And that's fine, because inside of curly braces can you redeclare variables with the same name if you intend to quote unquote shadow the previous variable.

那是可以的，因为,在花括号里面，你可以重新定义一个,相同名字的变量,如果你想引用之前的变量。

哈佛公开课 - 计算机科学课程节选