翻译：why did they change the plane for no reasons?

翻译：why did they change the plane for no reasons? 英语翻译people change the reasons why they keep dogs as pets 咋翻译 but people change the reasons why they keep dogs as pets 咋翻译 why did the man change his job? What did they buy for lunch?Why? Why did events turn out the way they did?这句话怎么翻译? 翻译 but they usually have good reasons for thinking There are some reasons a ________my plane for the summer vac When did they invent the plane?改为被动语态. when did they make the model plane改被动句 They just change the furniture for the purpose.请问这句怎么翻译,有什么语 When did the plane.