You should confirm your reservation at least 24 hours in advance.

你应该至少提前24小时确认预订。

同一单元的其他句子

• The train to Beijing leaves at nine in the morning.去北京的火车早上九点出发。
• Where can I buy a ticket for the subway?我在哪里可以买到地铁票？
• Don't forget to bring your passport when traveling abroad.出国旅行时别忘了带护照。
• We are going to take a taxi to the airport.我们打算乘出租车去机场。
• The flight was delayed because of the heavy rain.由于大雨，航班延误了。