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That position number is needed in case the node has siblings of the same type and name, to indicate which one we're referring to.

位置号是必需的，以防节点有相同类型和名称的兄弟节点，这样可以表明我们引用的是哪个节点。

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Our number one phone gets the top position for a very simple reason.

获得该榜第一名的手机之所以能登顶在于一个普通的原因。

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The book entered The New York Times Best Sellers list at the number one position on September twenty-fifth.

VOA: special.2009.10.09

During the second quarter, Lenovo grew its number-one position in China, the world's largest PC market, to a leading market share of 34 percent, up 2.4 points year-over-year.

ENGADGET: Lenovo Q2 earnings reveal record high sales of $8.7 billion, highest-ever PC market share

This gave it the number-one position on the TOP500 list.

ENGADGET: Fujitsu K supercomputer now ranked fastest in the world, dethrones China's Tianhe-1A

Two Russian oil companies, Yukos and Sibneft, are to merge, knocking Lukoil from the number-one position in Russia and creating the world's third-largest private oil company in production terms.

ECONOMIST: Ecstatic