rhetorical question

rhetoric (art of using language)

to inform, to teach, to instruct / to tell

to ask (implies a doubt about something) / to doubt or suspect that something might not be real or true

a question (implies a doubt about something) / a doubt or suspicion about whether something is real or true

疑問: question; doubt

a custom, usual practice, habit / a precedent / the aforementioned / a case, an instance, an illustration, an example

(attributive) the usual, the aforementioned, you-know-who

as expected; as always

example