Although they are separate, together they all addup to something; they are connected with each other and with other cities.
它们虽各自独立,但结合在一起又衍生出新的东西;同时书与书彼此呼应,城与城相互牵连。
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“You don’t need to be extreme to be in the healthy category, ” said lead researcher Elisabeth Kvaavik of the University of Oslo. “These behaviors addup, so together it’s quite good.