outdoor 
英 [ˈaʊtˈdɔː]  美 [ˌaʊtˈdɔr] 
adj. 户外的，露天的

例句：
It was outdoor work, and fairly healthy. 

这是户外工作，相当有益健康。

They're ideal for every outdoor pursuit. 

它们非常适合一切户外活动。

She excelled at outdoor sports. 

她擅长户外运动。

If you enjoy outdoor activities, this is the trip for you. 

如果你喜欢户外活动，这次旅行很适合你。