"outdoor clothes" "badminton and other outdoor games" "a beautiful outdoor setting for the wedding"
"outdoor education is the area of teacher training concerned with training for outdoor activities"
误 In hot summer they like to sleep outdoor.
正 In hot summer they like to sleep outdoors.
我喜欢户外运动。误 I like outdoors sports.
正 I like outdoor sports.
析outdoor是形容词,意思是“户外的”, outdoors是副词,意思是“在野外”“在户外”。