名词户外，露天

1. 户外; 露天：opacity 不透明度; 阻光度 | open air 户外; 露天 | open burning 露天焚烧

2. 露天：open a hole 清理井 | open air 露天 | open and shut valve 双位开关

3. 露天的、开启的：Open 开、打开 }hg=#* | Open-air 露天的、开启的 W|fE]RY | Open work 户外作业 s(Gs?6}T

noun

1. where the air is unconfined

e.g. he wanted to get outdoors a little
the concert was held in the open air
camping in the open

Synonym: outdoorsout-of-doorsopen