The casing hanger provides a means of ensuring that the string is correctly located and generally incorporates a sealing device or system to isolate the casing annulus from upper wellhead components.

套管悬挂器可确保套管柱被正确地放置，它一般包括一个密封装置，以便将套管环形空间与上部的井口部件隔离。

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This would allow the banking system to prove that the payment had been authorized by the client, and thereby isolate itself from any liability.

这样，银行系统便可以证明付款已经得到了客户的授权，从而让自己免除任何责任。

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The approach allows system administrators to isolate potential security risks while maintaining the flexibility that tools like PHP provide.

这种方法使系统管理员能够降低潜在的安全风险，同时保持PHP等工具提供的灵活性。

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They say Sao Paulo's prison system does not have the capacity to isolate such dangerous inmates and they should be transferred to federal prisons.

BBC: Brazil: 13 new deaths in Sao Paulo's gang battle

Steve Gay: Well, without knowing the precise circumstances of that particular job I would expect the engineer to do the checks that he would normally do, but essentially would isolate the system if there was suspicion of carbon monoxide, and advise the consumer to have the appliances tested and checked by a Corgi-registered installer.

BBC: Frontline Scotland graphic

Chamber officials say they haven't been able to keep intruders completely out of their system, but now can detect and isolate attacks quickly.

WSJ: Chinese Hackers Hit U.S. Chamber