a change of subject meaning in English

课程的改变

But as you have already had a full day of basel ii i thought you might welcome a change of subject , or at least a shift of emphasis , so in my remarks tonight im going to talk about a matter increasingly dear to a central bankers heart , namely , macroprudential surveillance
但资本协定二已谈了一整天，大家可能会想转口味，或将重点稍作调整，因此我准备谈央行人员越来越重视的宏观审慎监察。