许多睡眠专家指出，对于饱受关节炎以及关节疼痛之苦的人来说，脸朝上平躺着睡觉是个不错的选择。
Many sleep experts point out that sleeping on your back is a good option for those who suffer from arthritis and joint pain.
许多睡眠专家指出，对于饱受关节炎以及关节疼痛之苦的人来说，脸朝上平躺着睡觉是个不错的选择。
The Corpse. Many sleep experts point out that sleeping on your back is a good option for those who suffer from arthritis and joint pain.
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