their

限定词

1. 1

   他们的、她们的、牠们的

   The students left their bags in the classroom.

   学生把书包留在教室里。

2. 2

   他的、她的用于性别不明或不特指的单数

   Every applicant must sign their form before leaving.

   每位申请人离开前都必须在表格上签名。

3. 3

   其指事物或组织

   The company doubled their profits in three years.

   这家公司三年内获利翻了一倍。