out of doors

名词 out of doors:

1. where the air is unconfined
   同义词：outdoors, out-of-doors, open air, open

副词 out of doors:

1. outside a building
   同义词：outside, outdoors, alfresco

1. It is warm enough for you to play out of doors.
   天气很暖和，你可以出去玩。
2. Cowboys spend most of their time out of doors.
   牛仔大部分时间都是在户外度过的。