Olivan's hope is that the social network will become a critical communication tool, akin to the phone.

奥利文的理想是能让SNS网站成为人们沟通交流的重要工具，就像电话一样普及。

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NIST researchers held focus groups with U.S. military personnel who have served overseas to determine critical communication interactions to simulate and evaluate in tests.

NIST的研究者和美国在海外服役的人员成立了专门的研究小组来模拟和评估以决定比较关键的交流交互。

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Those who did try to return calls found the lines busy (just in case people think I mean deliberately jammed), leading to critical communication lags amid a constantly shifting situation.

有些人想打电话回去的，但线路总是忙音(这让人认为是故意把线给卡了)，形势瞬息万变的时刻，通信偏偏拖慢了后腿。

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Motorola Solutions is a leading provider of business- and mission-critical communication products and services for enterprise and government customers.

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Thuraya is looking forward to bringing the best of mobile satellite devices and industry expertise in support of critical communication services in our partnership with SoftBank Mobile.

ENGADGET: Softbank will offer satellite phones for use during natural disasters

Apparently, all of the above were considered military-grade, mission-critical methods of communication 100 years ago.

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