换张硬度舒适
The hardness of the change sheet is comfortable
以上为机器翻译结果，长、整句建议使用 人工翻译 。
如果你的床垫的服役年龄高于10年，老兄，好换啦，换张硬度舒适的吧。
Replace your mattress if it's more than 10 years old, and buy one that's as firm as you can tolerate but still comfortable.
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