it's supposed to operate on normal city streets with cars ...

来源: panzerkom 于 2010-08-04 13:05:30 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (18 bytes)
回答: 跟电车火车一样弄成几节就可以了 由 7.5 于 2010-08-04 11:59:23

passing underneath

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