It is our principle to carry out a tour strictly according to the set itinerary, but we reserve the right to make any changes due to some unforeseeable circumstances.

严格按照所定计划办事是我们的原则，对可能出现的一些不可预见的情况，我社则保留修改原定计划的权利。

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Both parties agree that they will use reasonable efforts to solve any problems due to any such unforeseeable circumstances in the spirit of mutual understanding and collaboration.

双方同意，他们将本着互谅合作的精神，尽合理的努力，解决由于此不可预见情形导致的任何问题。

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The changes of circumstances must be unforeseeable or have not been foreseen by the parties.

情事变更必须非为当事人所预料并具有不可预料的性质。

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When a company is sued, it may invoke an "unforeseeable business circumstances" or "faltering company" defense that allows it to provide notice (and severance) for less than the full 60 days.

FORBES: Business In The Beltway