Other neurons, in the brain, respond to things that appear to lie within arm's reach.

而(猴子)脑子里的其它神经元则只对猴子的手臂够得着的范围内的事物有反射作用.

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So he did that. He bobbedand down, helpless, within arm's reach of the fishermen.

他果真那么做了. 他无助地随波上下浮动, 与渔夫近在咫尺.

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