自己动手为自己服务；不需要他人帮助to serve oneself

• 今夏旅游添新花样——自助漂流。

  This summer, there is a new type of travel: self-service rafting.

• 饭堂里12种香喷喷的自助食品任女兵们自由挑选。

  In the dining room, there are 12 fragrant buffet dishes for the female guests to choose from.