Question

帮我分析一下句子成分

帮我分析下面句子的句子成分：
For some applications, such as switching thousands of Internet packets, capacity trumps cost.

That is why long-distance communications in rich coun-tries now travel primarily over optical fiber.

And it is why Cisco spent half a billion dollars over the past four years to create an optical router,debuted this past May, whose 30 fiber-optic lines run at 40 gigabits per second (Gbps)-inprinciple, enough aggregate bandwidth to handle the Internet traffic of 1.6mil-lion DSL-equipped households.
分析一下句子成分，最好能帮我翻译，谢谢

Answer 1

For some applications, such as switching thousands of Internet packets, capacity trumps cost.
对于某些网络应用，如转发数以千计的数据包，容量的成本是个问题。
That is why long-distance communications in rich countries now travel primarily over optical fiber.
这就是发达国家的长距离通信主要都通过光纤来实现的原因。
And it is why Cisco spent half a billion dollars over the past four years to create an optical router,debuted this past May, whose 30 fiber-optic lines run at 40 gigabits per second (Gbps)-in principle, enough aggregate bandwidth to handle the Internet traffic of 1.6 million DSL-equipped households.
这也是思科公司耗资5亿美元，经过长达4年多时间来开发光纤路由器的原因。该路由器已于五月上市，其20条光纤传输线的速率高达40Gbps。理论上，其最高带宽已经足以满足160万DSL家庭的上网需求了。
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参考词汇：
－－－－－－－－－－－－－－－－－－－－－－－
trump：胜过
debut：初次登场
aggregate ：总计
bandwidth ：带宽
household：家庭