on a trip, in a trip之间有什么区别?

on a trip还是IN A TRIP 是on a field trip,还是 in a field trip on a trip, in a trip之间有什么区别? in a trip还是in a trip on a school trip be on a business trip go on a trip 造句 on a shool trip呢 Why can we gko on a field trip in spring Why can we go on a field trip in spring? You classmate often _ (go) on a trip in spring take a trip词组take a trip in 还是take a trip at 还是to? a trip in a plane等于什么? Gogo went on a trip last go on a trip to the Canada went on a trip是不是一个地点? we will go on a trip.翻译 go on a school trip的意思