pron. 他（她，它）們的；在提及性別不詳的人時，用以代替 him 或 her
網 絡
他們； 其； 自己； 它們
詞條標簽：
CET4 CET6 考研
柯林斯高階英漢雙解學習詞典 現代英漢綜合大詞典 英漢雙向大詞典
Their is the third person plural possessive determiner. their 是第三人稱復數所有格限定詞。
1. DET-POSS 所有格限定詞他們的;她們的;它們的 You use their to indicate that something belongs or relates to the group of people, animals, or things that you are talking about.
Janis and Kurt have announced their engagement...
賈尼斯和庫爾特已宣布訂婚。
Horses were poking their heads over their stall doors.
馬兒們從馬廄門上探出頭來。
...as the trees shed their leaves and the year begins to die.
隨著樹葉雕落，壹年將逝
2. DET-POSS 所有格限定詞(代替 his or her，而不指明是男是女;有人認為這種用法不對) You use their instead of 'his or her' to indicate that something belongs or relates to a person without saying whether that person is a man or a woman. Some people think this use is incorrect.
Every member will receive their own 'Welcome to Labour' brochure.
每個黨員都將收到壹本名為《歡迎加入工黨》的小冊子。
But anyone looking for income from their investments is in a much worse state.
但是，那些指望靠投資獲取收入的人境況更為糟糕。
Usage Note :
Take care not to confuse their and there.
註意不要混淆 their 和 there。