慢速英语:德国科学家治愈后肢瘫痪老鼠 使其恢复行走能力

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paralyzed – adj. unable to move or feel a part of the body

spinal cord – n. a large group of nerves that runs through the center of the spine and that carries messages between the brain and the rest of the body

muscle – n. body tissue that produces movement

mammal – n. a kind of animal that gives its young milk and has hair

primate – n. a group of animals that includes monkeys, apes and humans