An interpreter at that level cannot - not 'should not' -...
An interpreter at that level cannot - not 'should not' - simply cannot, make a mistake. He cannot. No way. Well, if he did he'd be out, and rightly so.
An interpreter at that level cannot - not 'should not' - simply cannot, make a mistake. He cannot. No way. Well, if he did he'd be out, and rightly so.