grant immunity的意思|示意

For more than a year they have been looking into alleged abuses in public-works contracts; a public inquiry would have to grant immunity to witnesses who might otherwise be charged.

警方在公共项目合同违法方面调查已经进行一年有余了。一旦举行听证会，就不得不赦免那些证人，但从另外一方面说也许这些证人是有罪的。

If what they did in the past was legal and proper, why is it necessary to grant them retroactive immunity?

如果他们所做的，在过去是合法和正确的，为什么要给予他们追溯免疫力？

In the end, most members of the legislature acknowledged that without the grant of immunity, telephone companies would be reluctant to cooperate with further emergency wiretaps.

最后，大部分议员承认，如果不给予豁免权，电话公司不会愿意在将来的紧急监控行动中提供合作。