on outdoor or in outdoor

outdoor outdoor是什么意思? There are many outdoor a_______ in spring Susie always takes on active part in outdoor activities.(保持原 户外运动应该说outdoor sports 还是 outdoor sport outdoor activities和outdoor sports的区别. Correlative Factors on visual forms of outdoor advertising 这 What outdoor activies do you like to do in spring? outdoor clothing with long sleeves,worn mainly in clod weath 英语作文 whether should students take part in outdoor activities In fall, it's __ __do outdoor __. ( )are allowed to take part in the outdoor activities