An American transportation expert points out that no matter what advantages America has gotten from vehicles over the past fifty years, it is easy to discover that the bill is far more than anyone can afford.
一位運輸學者也指出，不管過去五十年美國人從汽車得到多大好處，如今汽車在人類生活中所開出的帳單，已經遠非人們所能承受。