在本示例中，我们将禁用所有的非叶节点，因为通常非叶节点只用来对希望对其执行任务的那些项进行分类。
In this example, we will disable all non-leaf nodes, because it is common that non-leaf nodes are just used for categorizing the items that you want to perform tasks on.
和「叶」采用了先进的锂离子电池，车商估计要能比笔记本电脑持续许多倍的时间。
The Volt and the Leaf use advanced lithium-ion batteries that the automakers calculate will last many times longer than the batteries in your laptop.
叶戈尔·盖达尔，改革家、丘拜斯长期的朋友，在他去年12月去世前不久出版的一本书中解释了俄罗斯的困境。
Yegor Gaidar, a reformer and Mr Chubais's long-time friend, spelled out Russia's predicament in a book published shortly before his death last December.
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