Wearing a helmet is the single most effective way of reducing head injuries and fatalities resulting from motorcycle and bicycle crashes.

带头盔是减少由摩托车和自行车撞车造成的头部损伤和死亡的单一最有效办法。

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Preventing head injury is the most effective way to prevent post-traumatic epilepsy.

防止头部受伤是预防外伤后癫痫的最有效方法。

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The concepts are actually not complicated, and with a few simple algebraic tips you will be able to do the math in your head as well, leading to more effective negotiation.

其实概念一点儿不复杂，只要有些简单的代数知识，你也能心算，这样谈判起来就更有效了。

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They claimed the seigneur is the "effective head of state" and the seneschal "the sole judge".

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The six-person team has identified an empty market around the excessive number of sports concussions, and are using technology to build a minimal, but effective head guard.

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Weedon is a teen-ager from the Fields, the housing project near Pagford, and she is the effective head of a household that includes a younger brother and their mother, a heroin addict.

NEWYORKER: Mugglemarch