把不属于自己的东西占来作为自己的to appropriate to oneself what rightfully belongs to another

• 因为它的稀有，导致玩家纷纷想据为己有。

  Because of its rarity, numerous players have wanted to take it as their own.

• 陈胖子贪得无厌，老周不在，他把给老周的那份也据为己有。

  Chen Pangzi's greed is insatiable; he takes Lao Zhou's share for himself when Lao Zhou isn't there.