1、在户外用英语是outdoors，读音：英[ˌaʊtˈdɔːz]美[ˌaʊtˈdɔːrz]

2、adv.在户外; 在野外;n.野外; 旷野; 郊外;

3、[例句]It was warm enough to be outdoors all afternoon.天气很暖和，整个下午都可以呆在户外。