Darwin used the beehive as an example of evolution, saying it "was absolutely perfect in economising labour and wax".
达尔文把蜂箱作为进化的一个例子，称其“在节约劳动和蜂蜡方面是绝对完美的”。
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By economising on scarce mobile spectrum, femtocells might prove most useful in managing the rapid growth of internet and video traffic to smartphones and tablet computers.