... 永久式水力坐封封隔器：hydro-set permanent packer 永久平台：permanent platform 永久年金：perpetual annuity ...
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Moore's law makes the foundations of software ever changing -- there's no "permanent" platform to build on.
摩尔定律使得软件的基础日新月异——软件没有一个“永久”的运行平台。
A relatively permanent offshore platform made of welded tubular steel in which the legs are attached to the sea bottom by piles.
由钢管焊接而成的相对永久性的海上平台。平台的腿由桩固定于海底。
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