This is the 43rd most frequent Chinese word.
他们
"They" or "them" (male or mixed-gender plural pronoun).
The word '他们' here refers to a group of people being the subject of the action performed.
他们正在公园里散步。
They are walking in the park.
In this sentence, '他们' relates to a group of individuals functioning as the object of the verb.
我昨天见到了他们。
I met them yesterday.
The term '他们' is used here to indicate a group of people within an indirect speech clause.