Clothing of slaves and 24:31

I have read that slaves do not veil from strangers. I want someone to give a proper explanation of how does that reconcile with 24:31: > And tell the believing women to lower their gaze and guard their > chastity, and not to reveal their adornments except what normally > appears. Let them draw their veils over their chests, and not reveal > their ˹hidden˺ adornments except to their husbands, their fathers, > their fathers-in-law, their sons, their stepsons, their brothers, > their brothers’ sons or sisters’ sons, their fellow women, those > ˹bondwomen˺ in their possession, male attendants with no desire, or > children who are still unaware of women’s nakedness. Let them not > stomp their feet, drawing attention to their hidden adornments. Turn > to Allah in repentance all together, O  believers, so that you may be > successful. — Dr. Mustafa Khattab, The Clear Quran My confusion is that if a slave is a believer then she can not reveal her adornment except to the people in this list. Strangers are not in the list. How to explain this?