名词
中文翻译：确认书同义词
同义词：
['confirmation', 'receipt', 'voucher', 'receipt of booking']
例句：
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1. We need to confirm the details of the reservation before we leave.
在我们离开之前，我们需要确认预订的详情。
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2. The hotel provided us with a receipt of booking as proof of our stay.
酒店为我们提供了入住证明作为住宿的凭证。
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3. After checking in, I received a confirmation letter from the airline.
在办理登机手续后，我收到了航空公司的确认信。