outdoor

形容词 outdoor:

1. located, suited for, or taking place in the open air
   同义词：out-of-door, outside
2. pertaining to or concerning the outdoors or outdoor activities

1. I never imagined that an outdoor life could do so much for a man? It's taken years off him.
   我从未想到户外生活对一个人能起这么大的作用，这种生活使他年轻多了。
2. I'm very keen on outdoor sports.
   我非常喜欢室外运动。
3. Children like outdoor activities.
   孩子们喜欢户外活动。

out.door

adj.（形容词）
Located in, done in, or suited to the open air:
户外的：座落于户外的在户外完成的或适于户外的：
例句：
badminton and other outdoor games.
羽毛球和其他户外运动