In practice, however, we found that function in the canal is often diminished before surgery, and replacing the covering itself may lead to inactivation of the canal anyway.

然而在实践中，我们发现声道的功能早在手术前就没有了，更换表层本身可能会引发声道永久失衡。

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IT professionals need not be all-knowing gurus to lead training sessions covering these programs.

IT专业人士不必成为一个无所不知大师才能进行这些培训。

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This can lead to something called an epidural haematoma, where blood builds up between the outer covering of the brain and the skull, with consequent pressure on the brain itself.

这种情况会产生硬膜血肿，也就是血液充满大脑外膜和颅腔，压迫大脑本身。

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King also was CNN's lead reporter covering Vice President Al Gore in the closing weeks of the 2000 campaign and during the post-election recount controversy.

CNN: About

Most insurers will therefore be reluctant to follow Allstate's lead and stop covering new homes.

ECONOMIST: George Bush is not the only one clearing brush

Mr Hammond, who visited Afghanistan last week, said Afghans were now taking the security lead in areas covering 75% of the population.

BBC: Philip Hammond meets senior Afghan