有一种普通的不定期客票，没有任何限制，可以提前购买，也可以当天购买。

There's a standard open ticket which doesn't have any restrictions. This can be bought in advance or on the day.

youdao

相比之下不定期客票会比较贵，但它可以帮助你在钱提前花光的情况下避免旅行的最后两个月是靠白饭和自来水度过。

Consider an open ticket – it costs more, but if you run out of money early, you won’t spend the last two weeks of your adventure living on steamed rice and tap water.

youdao

相比之下不定期客票会比较贵，但它可以帮助你在钱提前花光的情况下避免旅行的最后两个月是靠白饭和自来水度过。

Consider an open ticket – it costs more, but if you run out of money early, you won't spend the last two weeks of your adventure living on steamed rice and tap water.

youdao