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生活在大城市里的人们,当乔迁之喜搬进高层建筑时,却又不免为爬楼梯发愁叫苦。其实,高层建筑有弊也有利,爬楼梯虽然辛苦,却是一项很有益的活动。它能使您
People living in big cities can not help but cry when they move into high-rise buildings. In fact, high-rise buildings have both disadvantages and advantages. Although climbing the stairs is hard, it is a very beneficial activity. It can make you