For example, users might want to know how long delivery is likely to take, or if they have to enter extra information such as their date of birth, they might want to know why this is.

举个例子，用户通常需要知道他订购的产品多久才能送到，或者当用户需要输入生日的时候，告诉他为什么要收集他的生日信息等等。

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In these circumstances the delivery date shall be extended for the period of their duration but only so far as the circumstances affected considerably the execution of the Contract.

在这些情况下，交货日期可相应顺延，但只有当这些情况严重影响到合同的履行时方可适用。

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As for the delivery date, what's your time limit?

你们最早能在什么时候交货？

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"We understand how frustrating and disappointing this news will be for those customers looking forward to flying on the 787 Dreamliner, we are equally as disappointed that Boeing was not able to confirm a delivery date for us but unfortunately these circumstances are out of our control, " said Thomson in a statement.

BBC: A Boeing 787 at Farnborough air show

The airlines said they had not been given new delivery dates for the planes, which Boeing has touted as its most energy-efficient and economical airliner to date.

BBC: Boeing warns customers of 787 Dreamliner delays