学校旅行、实地考察、郊游、外出活动

1. school trip, field trip, excursion, outing

noun or participle which takes the aux. verb suru intransitive verb noun (common) (futsuumeishi)

长途步行，徒步旅行

2. long walk, excursion (on foot)

noun (common) (futsuumeishi) intransitive verb noun or participle which takes the aux. verb suru dated term