形容詞 outdoor:

1. located, suited for, or taking place in the open air
   同義詞：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.
   我從未想到戶外生活對一個人能起這么大的作用，這種生活使他年輕多了。
2. I'm very keen on outdoor sports.
   我非常喜歡室外運動。
3. Children like outdoor activities.
   孩子們喜歡戶外活動。

out.door

adj.（形容詞）
Located in, done in, or suited to the open air:
戶外的：座落于戶外的在戶外完成的或適于戶外的：
例句：
badminton and other outdoor games.
羽毛球和其他戶外運動