America has levied tax on motor fuel for nearly one century, which shows that the highway cost can not be equitably allocated among vehicles by sole fuel tax.是什么意思_America has levied tax on motor fuel for nearly one century, which shows that the highway cost can not be equitably allocated among vehicles by sole fuel tax.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句