您不必写这些冗余的代码和管理多余的工作。

You needn't write the redundant code and manage the extra work.

youdao

但另一方面：使用框架会增加学习成本并且会产生多余的样式和标记代码，最终导致网页代码冗余。

However, take note: Using frameworks involves a learning curve and can bulk up your web page sizes with unnecessary style rules and markup.

youdao

我字典里对于冗余的定义是“超级富余，多余的，过量的”，这样冗余性就意味着实际上并不需要那么多。

My dictionary defines redundant as "superabundant, superfluous, excessive" and redundancy therefore means that there is more than is actually required.

youdao