Air superiority - is a supporting element, but a critical one.

空中优势——这个因素处于从属地位，但也是至关重要的。

youdao

Then there are those who operate or manage networks--mostly a behind-the-scenes job, but a critical one and often a very complex one.

接着是操作和管理网络的那些人---绝大多是后台工作， 但是也是至关重要的一个并且经常是非常复杂的。

youdao

But if the book has one major shortcoming, it's that the authors don't spend enough time applying a critical eye to the role of Internet businesses in these sweeping changes.

但如果说这本书有一个主要的缺点，那就是作者没有下足功夫，以批判的眼光来看待互联网企业在这些变革中所扮演的角色。

youdao

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