A user can hold multiple exemptions.

一个用户可以拥有多个豁免权。

So should distorting exemptions on capital-gains taxes;

对于资本利的税收也应该变相免除；

The best tax systems combine low rates with minimal exemptions.

最好的税制是最少的利率加最小的免税额。

I haven't seen them name any significant exemptions they would end.

我本人没有看到他们列出任何他们希望终止的重大免税项目。

The database security administrator can also grant exemptions to users.

数据库安全管理员还可以为用户授予豁免权。