1. I'll call the hotel. I'll tell them we'll checkin tomorrow.
我会给旅馆打电话,通知他们明天我们将登记入住。
《柯林斯英汉双解大词典》
2. Passengers with hand luggage can go straight to the departure gate to check in there.
携带手提行李的乘客可以直接到登机口办理登机手续。
《柯林斯英汉双解大词典》
3. Please check in after 1:00 pm tomorrow.
请在明天下午1点后入办理入住手续。
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4. Please checkin half an hour prior to departure.
请在起飞前半小时办理登机手续。
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5. I put a checkin the envelope and taped it back to the bin.
我把一张支票放在信封里,并把它粘回垃圾箱上。
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6. I only have thirty minutes to clear customs in getting to the city center and it means I have to checkin by five-thirty, which means leaving home at about four fifteen.