These different types should be treated in alternate flows of events, and the business rules must also consider them, by computing room charges under different booking types, for example.
这些不同的类型应当按照可选流来对待，并且业务规则也必须考虑它们，例如，通过计算不同预订类型的房间费用。
For example, if there is a use case to make a room booking, there must also be computation rules to determine the room charges.
例如，如果有一个用例是进行一个房间预订，也必须有一个计算规则来确定房间费用。
Unlike with the merchant model, consumers booking hotels with allhotels pay no booking fees and the hotel charges their credit cards only at check-in or checkout, depending on each property’s policy.
有别于净价模式，消费者在allhotels订房时不需要支付预订费用，然后酒店在客人登记入住或退房时（根据不同酒店的规矩而定）直接向客人收取房间费用。
Exhibitor shall pay 30% deposit within one week of confirmation of booking and pay the balance of all exhibition related charges 3 months before the exhibition commence.
参展商在确定展位后一周内支付30%的定金，并在开展前三个月付清全部参展费用。
The receiving side ensures financially air-pert charges, fees in connection with Booking air-tickets and expenses of the trips necessary for fulfilling the programme of the stay.
接收方在经济上应承担机场建设费、机票预订费以及为完成旅居计划所必须的差旅费用。
The receiving side ensures financially air-pert charges, fees in connection with Booking air-tickets and expenses of the trips necessary for fulfilling the programme of the stay.
接收方在经济上应承担机场建设费、机票预订费以及为完成旅居计划所必须的差旅费用。
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