But we don't like the tellers to know we are coming.it's supposed to be a surprise inspection.

但是我们不愿意事先就让出纳员们知道我们要来检查，应该是一种出乎意料的检查。

youdao

The report was compiled after a surprise inspection the county council's child protection services.

BBC: Report on child protection in Northamptonshire

In November 2009 a surprise Ministry of Justice inspection found an increase in the inmate population of 300 in three years had led to an increase in the use of force.

BBC: Norfolk prison inmates 'detained for too long'