He believes that a combination of economies of scale and specialisation can radically reduce the cost of heart surgery.
他相信规模经济与专业化相结合能够从根本上消减心脏手术的费用。
The presenters noted that these options can be used in any combination to scale applications either up or down.
主讲人指出,我们可以任意组合使用这些方案,从而增大或者减小应用程序的规模。
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