这些词典可以从特殊的索引实现，而索引又需要唯一元素名称。

These lexicons can be implemented from special indexes, which in turn can require unique element names.

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不要用从一元店买来的橡胶层又轻又薄的延长电缆去给你的高清电视供电。

Don't use a dollar store extension cord with a flimsy, thin rubber sheath to get power to your HDTV.

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前端，又细又长的神经元伸展的细胞突出停止，然后拖动后边的球状细胞，然后再次伸展，如此反复。

In front, the long thin cellular protrusion of the neuron extends, pauses, then drags the bulbous cell body behind it, then extends again, and so on.

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