Where can I top up my transit card?

请问公交卡在哪里可以充值？

同一单元的其他句子

• What's the most economical way to get from the airport to the city center?请问从机场到市中心最经济的交通方式是什么？
• I need to go to this address. Please take the fastest route.我要去这个地址，请走最快的路线。
• Which is more cost-effective: a daily pass or a single ticket?地铁日票和单程票哪种更划算？
• My navigation shows road construction ahead. Is there an alternative route?我的导航显示前方道路施工，有没有其他路线？
• I'd like to rent an automatic car for three days. What do I need?我想租一辆自动挡的车，租三天，需要什么手续？