旧金山 BART和MUNI，6岁，1.2米，需要买票吗？

Children 4 and under ride free but everyone else must have a ticket. BART tickets are like debit cards with stored value. All BART stations have automatic ticket vending machines that accept nickels, dimes, quarters and $1 coins, as well as $1 $5, $10 and $20 bills. You can also use credit and debit cards in select machines.
这是网站上的解释，网址：http://www.bart.gov/tickets

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