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1·You must pay for the book in advance.

你必须事后付书的钱。

2·You must pay for the book in advance.

你必须预先把书的钱付了。

3·Book in advance.

提前预订。

4·The guesthouse has a limited number of beds - please book in advance.

旅馆床位数量有限，请提前预订。

5·You can join the family for a meal as well - just book in advance for supper.

你也可以参加本地家庭的用餐，不过要提前预定，而且只有晚餐。

6·Large orders, please book in advance 2-3 days to make arrangements for time.

大量订购请提前2 - 3天预订，以作出安排时间。

7·Passengers have to be older than 18, book in advance and sign a liability waiver.

乘客必须年满18周岁，提前预约，还需要同意免责协议。

8·Current shortterm tours are main for travel groups and the prices are relatively lower as well as it is essential to book in advance.

浙 江新世界国旅市场部负责人陈苑苑表示，目前推的短线产品主要是针对团队客人的，价格也相对优惠，需要客人提前报名。

9·Non-residents must book in advance for a HK$39,000 (around $5,031) package stay in public hospitals - and only when extra beds are available.

非本地居民必须以39,000港元（约合5,031美元）的价格提前预订到公立医院住院，而且只有在有额外床位的时候才可以。

10·It's cheaper if you book the tickets in advance.

预订票要便宜一些。《牛津词典》