您要查找的是不是：
- Is this ticket refundable? 这张机票可以退票吗?
- How long is this ticket available (valid for)? 这票有效期是多长时间?
- How long is this ticket available ? 这票的有效期是几天?
- Be this ticket refundable? 这张机票可以退票吗？
- Let me help you to have this ticket refunded and buy another one for the next train to B. 站长: 让我帮您把这张票退掉，重新买一张下一趟到B去的车票。
- I'd like a refund on this ticket. 我要退这张票。
- Could I get a refund for this ticket? 这张机票能够退吗?
- This ticket has passed its expiration date, and so it is now invalid. 这张票已过了有效期，现在作废了。
- This ticket is good for one day. 票在一天内有效。
- Is this equipment tested for mechanical aptitude? 这台设备测定了其机械适应性了吗？
- I missed the train. Could you please refund this ticket for me? 我没有赶上火车。可以帮我把票退了吗?
- Is this reference book of any use to me? 这本参考书对我有用处吗？
- This ticket is out of date This ticket is overdue. 这张票过期了。
- It is this molecular motion that we call heat. 就是这种分子运动我们称之为热。
- This ticket doesn't entitle you to travel first class. 你这张票不能坐头等位。
- Is this the original drawing or is it a copy? 这是原画还是模本?
- This ticket is overdue and invalid. 这张票过期且无效了。
- This ticket is valid for two day. 这票有效期是两天。
- Is this game a league match or a friendly? 这场比赛是联赛还是友谊赛？
- Is this your first visit to London? 这是你第一次访问伦敦吗？
