为了说明这个作法，图5显示一个虚构的迭代器的状态，它能够向后移动一、二、三、四个位置，但不能移动更多位置，因为这要求访问前面访问的叶节点。

To illustrate, Figure 5 shows the state of a hypothetical iterator that can move back one, two, three, or four places, but no more, because that would require accessing the previously visited leaf.

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卢日科夫的夫人叶莲娜•巴图琳娜，也是俄国富婆之首，向来否认她经营建筑工程发大财全靠了她丈夫的官职。

Mr Luzhkov’s wife, Yelena Baturina, who is now Russia’s richest woman, has consistently denied that she owes her fortune in the construction business to her husband’s position.

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她们只用少许莴苣叶蔽体，在哈萨克斯坦的首都阿拉木图的街道上游行。

Yvonne Taylor, left, and Lucy Groom proved quite a dish when they covered their modesty in bits of lettuce and campaigned on the streets of Kazakhstan's capital, Almaty.

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A lot of times when people draw them, they even only draw the big lobe just to keep their paper looking nicer, but there is that little tiny lobe on the other side.

很多时候当人们画它时，为了使图更加美观,他们甚至只画大叶，但另外一面是有一个小叶的。

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