The baggage required for the trip is a function of the starting point, mode of travel, expected duration of the journey, and of various conditions and expected activities at the destination.
旅程所需的行李随着起始点、旅行的模式、预期的旅行时间，和目的地的各种条件和预期的活动而变化的。
2
I have collected all my travels within the immediate local area (Boston) into a series of maps categorized by the modeof transportation for each trip.
我集中附近区域内(波士顿)的游记归类成系列地图，再根据所用交通工具分类。
3
There are stable relations between tripmode split and personal characteristics, family characteristics and trip characteristics, which change little with the change of time.