一些城市会举行感恩节游行。
一些城市房价见涨。
事实上,在21世纪初,一些城市开始为残疾人修建无障碍设施。
In fact, in the early 2000s, some cities started to build barrier-free facilities for disabled people.
This was when you had this big track, and if you have wandered around different Greek cities that are dug up, some of them will have the hippodrome there, and you can see how huge they were.
里面是大型赛道,如果你参观过发掘出土的希腊城市,有一些会有赛马场,非常宏伟巨大。
And though you see there's something, you know-- I've been making the case that a polis is a different thing from any other city state.
尽管你了解了一些,你知道,我一直在说,城邦和其他城市国家是不同的
So the problem here, roughly, is given, a number of cities, and say the cost of traveling from city to city by airplane, what's the least cost round trip that you can find?
基本上就是一个这样的问题,你被告知了一些城市,以及在城市之间坐飞机旅行的花费,那一条是你们能找到最短往返路径?
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