The old man, losing his head, breathless, gasping, dislocated his stiff joints in his efforts.

这老头儿着了慌，气也透不过来，呼呼地直喘，因为用了力，僵硬的关节差一点脱臼。

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Further complication - lower immune system, bacterial infection, stiff joints, arthritis, lower productivity, and lower nutritional status of their family.

进一步恶化-降低免疫系统，细菌传染，僵硬的关节，关节炎，更低的生产力，和家庭的营养状态降低。

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Ahava's muscle Soothing Eucalyptus Mineral Bath Salts relax tight muscles and help stiff joints with the benefits of magnesium, calcium, sodium and potassium.

艾哈佛的肌肉舒缓桉树矿物浴盐放松紧绷的肌肉和关节僵硬，镁，钙，钠和钾的好处。

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Sharpe and Simpson, who ran Ideal Mobility Solutions, mainly sold ordinary mattress covers that were claimed to have health benefits for ailments such as bad backs and stiff joints.

BBC: Mobility aids con salesmen jailed

It will not come down until the two countries loosen their labour markets' famously stiff joints by cutting minimum wages, making hiring and firing easier, reducing payroll taxes and so on.

ECONOMIST: Jobs

Technology developed at MIT's Leg Lab, where Dilworth works, allows researchers to make robots with springy joints, not stiff ones.

FORBES: Dinosaur Robots For Sale