预定号英语怎么说

预定号在英语中通常称为 "reservation number"，它的来源源于它的作用，即用来预定或保留某些东西，例如机票、酒店房间或餐厅座位。
例句：
Can you please provide your reservation number so that I can look up your reservation? 请提供您的预定号，这样我就可以查询您的预定信息。
I can't seem to find my reservation number. 我找不到我的预定号。
The reservation number is located on the confirmation email we sent you. 预定号位于我们给您发送的确认电子邮件中。