为紧急情况储存一些水怎么样？
但是，为紧急情况之外的事情离开教室则是不可以的。
However, leaving the class for something other than an emergency is not acceptable.
但是在美国则不同，和中国家庭相比，很少有美国家庭为紧急情况和教育存钱。
It is different in the USA, where far fewer families are saving money for emergencies and education than their Chinese counterparts.
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