【这里的and是并列还是因果的意思?Thetripperiodwillnotbechangedunlessallthepublictransportationstopsrunningduetonaturaldisasters【and】peopleareunabletoreachourresorts.并列：除非是因灾停运和人来不了】

　　这里的and是并列还是因果的意思?

　　Thetripperiodwillnotbechangedunlessallthepublictransportationstopsrunningduetonaturaldisasters【and】peopleareunabletoreachourresorts.

　　并列：除非是因灾停运和人来不了这两种情况,旅行日程不会变

　　因果：因为停运所以人来不了