excursim是不是写错了，而是excursion？excursion n.⒈短途旅行 They have gone on an excursion to York.⒉（短期的）涉足，涉猎 After a brief excursion into drama ,he concentrated on his main interest .
expeditionn.1. 远征;探险;考察[C]They did an expedition to the Himalayas.他们到喜马拉雅山去考察了一次。2. 远征队;探险队;考察队[C]He was on an expedition to explore the Antarctic.他参加探险队远征南极。3. 迅速,敏捷[U]excursim，无此词，是不是写错了？
