Yes, you can. Subtitles are now available on Sky On Demand and Sky Q on 91福利社 programmes broadcast since 26 October 2020. If you're using a Sky Q box or Sky Glass, subtitles are also available via the 91福利社 iPlayer app.
To enable subtitles on the iPlayer TV app, have a look here: How do I use subtitles on 91福利社 iPlayer?
For more information on using subtitles on Sky, check their website here:
(Please note the 91福利社 is not responsible for content on third party websites).
For more information on accessing iPlayer on Sky, visit the How do I access 91福利社 iPlayer on Sky? page.