Translation

• one of (sth)
• one out of a multitude
• one (third, quarter, percent etc)

Synonyms

• 有, 某, 某个, 某某, 某部

Examples

• 仅三分之一的成员出席了会议。
  Only one third of the members turned up at the meeting.
• 他是日本最伟大的艺术家之一。
  He is one of the greatest artists in Japan.
• 六个成员中有三分之一是女性。
  Out of the 6 members, a third are women.