Network is a "double-edged sword," when it provides a great convenience for the students' study life, it also has serious negative effects upon the college students' morality.

网络是一把“双刃剑”，它在给大学生的学习生涯提供极大便利的同时，也给大学生的思惟道德带来严峻的负面影响。

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For mapping, the network technology is a double-edged sword.

对于测绘而言，网络技术就是一把双刃剑。

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Network sniffing is like one double-edged sword. It makes the network administrator convenience, but it also offers the hacker a tool to steal network information.

网络监听技术就像一把双刃剑，在提供给网络管理员管理网络的方便时也提供给黑客一个盗取网络信息的工具。

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