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Your sentence
那个 人 是 谁?
Words in this sentence
那个
that one; that thing; that (as opposed to this); (used before a verb or adjective for emphasis); (used to humorously or indirectly refer to sth embarrassing, funny etc, or when one can't think of the right word); (used in speech as a filler, similar to "umm", "you know" etc); (euph.) menstruation; sex; also pr. nèige
人
person; people
是
to be (followed by substantives only); correct; right; true; (respectful acknowledgement of a command) very well; (adverb for emphatic assertion)
谁
who; also pr. shuí