求翻译：刺激膝盖处大腿肌肉的感受器，在感觉神经元中引发了动作电位，动作电位上行到脊髓，脊髓中感觉神经元直接与运动神经元建立突触联系。如果信号足够强，就可以在运动神经元中引发动作电位，当这个动作电位穿递到大腿肌肉，即可引起膝跳反射。然而大多数反射要比膝跳反射复杂的多，在脊髓中包括有一个或多个中间神经元，将感觉神经元和运动神经元连接起来。是什么意思？

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Stimulate your knee, thigh muscles, the feelings in my nerves in the action potential, action potential upstream to the spinal cord, and my nerves in the spinal cord $neurons directly with the campaign for the contact. If the signal is strong enough, the movement can be triggered in neuronal action

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Stimulate the receptors of the knee thigh muscles, raised in the sensory neuron action potential, action potential upside to the spinal cord, spinal cord sensory neurons and motor neurons directly in the establishment of synaptic connections. If the signal is strong enough, it can be raised in motor

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