Companies who take advantage of IPSec for IPv4 being a protocol option, not a requirement, can skip this option and replace it with proprietary protocol security solutions.

利用IPSec for IPv4(协议选项而不是要求)的公司可以跳过该选项，并使用私有协议安全解决方案替代。

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After a century of communication over copper, the future will belong to those who can best replace it.

在使用铜线进行通讯一个世纪后，未来将属于那些能完全取代铜媒进行通讯的公司。

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HP has hired the firm Spencer Stuart to help it find an executive who can replace Hurd permanently. Lesjak, chief financial officer, has taken herself out of the running.

惠普已经雇用了斯宾塞·斯图亚特公司帮助他们寻找一位能够永久代替赫德的首席执行官。首席财务官莱斯·雅克已经退出本次竟选。

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