voluntarily [ˌvɑ:lənˈterəli]

例句:

• Four people who sought refuge in the Italian embassy have left voluntarily.
  4名在意大利大使馆寻求避难的人已经自愿离开了。
  
• Some brands are already voluntarily stating they are clone-free.
  来自SA
• They prevented ranchers from voluntarily testing their own beef.
  来自SA
• He was not asked to leave—he went voluntarily.
  没人让他走，是他主动走的。
  
• They were said to have left their land voluntarily.
  据说他们是自愿离开他们的家园.
  
• The data is submitted voluntarily to The Times by schools.
  来自THETIMES