1·Why not / Why don’t you book tickets online / reserve the ticket(s) on the Internet?
你为什么不在网上订票?
2·When busying, book ticket for me and let me bring parents to outside and have fun.
忙时给我定机票，让我带父母一起出去玩。
3·If you want to attend the concert conducted by the famous conductor, you should book a ticket in advance.
如果你想参加那位著名指挥家指挥的音乐会，你应该提前订票。
4·If you want to be certain of getting a ticket, book now.
要想有把握买到票，现在就得预订。
—— 《牛津词典》
5·One adult could only book one child ticket.
一个成人只能订一张儿童票。
6·Otherwise, it might end up buying an airline ticket when what the end-user really wanted was a book.
否则，虽然最终用户真正希望是一本书，但最后买到的却是一张飞机票。
7·If you book your ticket yourself, online, you save that money.
如果你自己在线预定票的话，就可以省掉这些钱了。
8·The answer is that the travel agency makes a little bit of money on each ticket you book through them.
答案是旅行社会在你预定的每张票上赚钱。
9·Can I book (a ticket) through to Chicago.
请买给我一张直达芝加哥的车票。
10·Otherwise, it might end up buying an airline ticket when it wanted a book.
否则，它可能事与愿违，明明需要的是一本书，但最后买到的却是一张飞机票。