怎么做：平躺下，仰卧。把书举到头部上方看，直到胳膊酸痛。
How it works: Lie flat on your back. Hold the book above your head and read until your arms are sore.
布莱克松寻思着，那恐怕再也没法儿醒过来了。他伸了伸胳膊，放松一下后背酸痛的肌肉，裹紧自己的披风。
You'll never wake from that sleep, he thought, and stretched his arms to ease the cramped muscles in his back and pulled his cloak tighter around him.
她的医生建议给她的胳膊肘部敷冰块并且通过适当的锻炼来缓解酸痛。
Her doctor recommended icing her elbow and certain exercises to help relieve the soreness.
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