But to take advantage of the airline's guaranteed fare policy, you'd have to make reservations and pay for your tickets at least six weeks in advance.

但是，如果你想利用航空公司的保证票价政策，就必须提前至少六周预订机票并付款。

youdao

The twelve-year-old is no longer considered a child and has to pay full fare for train, airplane, theater and movie tickets.

这个12岁的孩子不再被认为是小孩子了，他必须支付全票购买火车票、飞机票、剧院票和电影票。

youdao

Children over the age of 12 must pay full fare.

12岁以上儿童须购全票。

《牛津词典》

Actually, he said, he was prepared to pay fare for the two of them when the attendant said his daughter could just duck under.

WSJ: Little Ones, the Subway and the Law

They will likely get better service and perhaps consider coming back to pay full fare in the future.

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"You need to pay your fare, young men, " he said sternly.

WSJ: Little Ones, the Subway and the Law