求翻译：　　Therefore，I sincerely believe that private cars should be discouraged in China. Then，by what means shall we limit private cars？Since people buy private cars mainly for convenience，my first suggestion is to develop adequate public transportation which is effective and punctual. At the same time，we should raise the price of gasoline to a prohibitive level so as to make car－driving expensive enough. All in all，private cars，from my point of view，should be limited in China.是什么意思？

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