VOA慢速英语:Toyota Plans to Offer a Robotic Leg to Help the Disabled

treadmill –n. a machine used for exercise or rehabilitation that has a large belt that moves allowing a person to walk or run on it without moving

paralyzed –adj. unable to move, unable to walk

touch panel screen –n. a kind of computer screen that operated by touching the screen

humanoid –adj. like a human being

challenge –n. a difficult task, something that is hard to do