Find a minimal cost tree for the network.

求该网络的一个极小费用树。

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Hence message tree size and design plays a crucial role in the processing cost.

因此，消息树大小和设计在处理成本中扮演着重要的角色。

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Yet despite its high cost, creatures ranging from ground dwellers to tree climbers and even flyers do it.

尽管这些花费过多，从地上居的到树上爬的，甚至天上飞的动物们都会去做。

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Company officials said a redesign bringing the height beneath the tree line would cost millions of dollars.

WSJ: The Cloisters Opens Up

More species can be mapped, and the cost of testing will fall, as surely as a chainsawed tree.

ECONOMIST: Genetic testing of wood can curb illegal logging

Expected to cost 2 billion rand and dubbed Zumaville, it will boast tree-lined streets, smart new houses, a library, a swimming pool, a theatre and a school.

ECONOMIST: South Africa and its Zulus