ㄏㄨㄚˋhuàㄌㄧˇㄊㄠˋtàoㄏㄨㄚˋhuà

  1. 談論牽涉其他事項

  2. 談話有意他人隱私審訊犯人常會話裡套話尋找線索。」

to use seemingly innocent conversation topics as a pretext to glean information, to touch upon other matters not central to the topic being discussed