try this

来源: 于 2017-09-11 06:22:58 [旧帖] [给我悄悄话] 本文已被阅读：次

下次刚擦边，直接就很诚恳地说：

I am very sorry but I don't feel comfortable in chatting in religions and politics as I am not knowledgeable enough in thes subjects. Can we switch the topic to anything else? Thank you.