This topic tree is composed of these topic strings.

这个主题树包含以下主题字符串。

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A topic tree can contain any number of nodes, each of which are related to topic strings.

主题树可以包含任意数量的节点，每个节点都关联到一些主题字符串。

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You must design the topic tree such that each copy of the message flow can serve a particular topic or portion of the tree.

您必须对主题树进行相应的设计，以使消息流的每个副本可以服务于一个特定的主题或树中特定的部分。

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Those worried that undue weight is being put on data from the tree rings of a dozen larches on the Yamal peninsula in Siberia, a topic that exercises Mr McIntyre, will be interested to see that some climate scientists shared some of their worries.

ECONOMIST: Leaked e-mails do not show climate scientists at their best