like english, few or little + something means almost nothing
少 means a little / a few it means 一点儿、不多 in chinese
here it is the negative of the verb 拿
so 少拿 means dont 拿
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少 可以作为动词的否定 意思是不要....别......
少拿我妈来压我 和 不要/别 拿我妈来压我 完全是一个意思~~