应该是现实的。 Otherwise MIT and US Transportation Department would not

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• 应该是现实的。 -雨婷她爹- ♂ (150 bytes) () 10/30/2010 postreply 12:12:19

• 唉，美国政府花钱研究的东西多了。既然它不是找＃0或CalTech去 -baydad- ♂ (53 bytes) () 10/30/2010 postreply 13:10:24

• MIT is as good as CalTech. I do not agree with you. -雨婷她爹- ♂ (0 bytes) () 10/30/2010 postreply 15:31:45