He also recalls how he knew, before an official mission briefing, when an assignment was going to involve travel to a dangerous war zone.
他也回忆了他是怎么在正式的任务简报下达之前了解到什么时间需要到危险的战区执行任务。
2
Basing on the models of travel distribution and traffic assignment, the basic formula to show the relationship between link traffic volumes and zone land use in cities has been researched.