translation.en: It's a thought in my brain, but at the same time, it's busy secreting acetylcholine and doing all sorts of other things as it makes its way from the motor cortex down through the nerve fibers in the arm.
translation.zh: 它是我脑袋里的想法，但同时 它也忙着分泌乙酰胆碱 和做所有其它各种事情 当它顺着手臂内的运动皮质到神经纤维运动时 当它顺着手臂内的运动皮质到神经纤维运动时