June's theme for Simple Living Media is travel and family time, so today's question is perfect for this topic.
《简单生活传媒》六月份的主题是旅游与家庭时光，所以今天的问题非常符合这个话题。
Moreover, this is the perfect time to travel on your own, work as a volunteer, or even study overseas. You can be better prepared to enter the.
除此以外，空档年正是独自旅行、参加志愿活动以及留学海外的绝佳时段。你也可以借此机会为将来踏入职场做好进一步准备。
In the first model users' generalized travel cost are assumed to be weighted sum of the standard deviation and the mean travel time, and users have perfect knowledge of the road network condition.
在第一种模型中，假定出行者的广义出行费用定义为平均行程时间和行程时间均方差的线性加权和，同时出行者能够正确认识自己的广义出行费用。
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