Looking at this entry below I assume that "hold back" has the same meaning as "keep" in the example sentence. If not, then what is the difference between these two verbs? Thank you.
https://idioms.thefreedictionary.com/hold+back
5. To withhold someone or something (from something).
I heard that Sarah's parents are holding her back from play rehearsals because she has the mumps.
I assume that "hold back" has the same meaning as "keep back " . Yes
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