肋骨, rib, 脊骨, spine, 關節, joint, 四肢骨, limb bones, 收縮, contract, 器官, organ, 放鬆, relax, 支撐, support, 保護, Protect, 深綠色蔬菜, dark green vegetables, 牛奶, milk, 肉類, meat, 魚, fish, 雞蛋, eggs, 運動, exercising, 伸展, stretch, 熱身, warm up, 合適的, appropriate, 保護裝備, protective gear, 頭盔, helmet, 護肘, elbow pads, 護膝, knee pads, 姿勢, posture, 更強壯, stronger, 更健康, healthier, 當值救生員, lifeguard on duty, 單車徑, cycling track, 室內體育中心, indoor sports Centre, 規則, rules, 運動, exercise.

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