Animals obtain food by force. Man has no claws, no fangs, no horns, no great strength of muscle.

动物以武力获得食物，而人类没有利爪，没有獠牙，头上没有尖角，肌肉也非有力。

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AIS scientists work across a number of sports, applying skills learned in one—such as building muscle strength in golfers—to others, such as swimming and squash.

AIS 系统的科学家研究许多运动项目，并将在其中一项运动中学到的技能——例如如何增强高尔夫球手的肌肉力量——运用到其他项目上，比如游泳和壁球。

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For most people, one set of strength exercises for major muscle groups performed two to three times a week is sufficient.

对于大多数人来说，一组主要肌群的力量训练只需每周两到三次的训练就足够了。

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But the wrong shoes, failing to warm up and not being aware of strength or muscle balance can also cause injuries.

CNN: Prevention better than cure

Acorda's drug, Fampridine-SR, works differently from dirucotide and specifically addresses one of the most devastating symptoms of the disease, loss of muscle strength.

FORBES: Two Steps Forward

Motorola has arguably benefited the most from its use of Google's Android smartphone operating system, turning its ailing business around thanks largely to the strength of Verizon Wireless's marketing muscle and the Droid franchise.

WSJ: Motorola Sues Apple Over Patents