Since 1948 three generations of residents in Framingham have participated in regular medical examinations originally intended to study the spread of heart disease.

自1948年，有三代弗雷明汉的居民参与到常规的健康体检中，最初的目的为了研究心脏病的传播。

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Adequate supplies of safe-drinking water and proper disposal of sewage within communities, combined with personal hygiene practices, such as regular hand-washing, reduce the spread of HAV.

保持对社区内安全饮水的充足供应和对污水的适当处理，同时提倡注意个人卫生，比如经常洗手，可减少甲型肝炎传播。

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Normally the sinoatrial node generates regular electrical pulses that spread across the Chambers of the heart, causing the cells to contract in synchrony.

正常情况下，窦房结产生规律的电脉冲，传入各心房，再带动细胞同步收缩。

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Staal spent more than 17 minutes on the ice in the Rangers' 4-3 Game 3 victory, helping neutralize Capitals star Alex Ovechkin. (The Rangers trail the series, 2-1, going into Wednesday's Game 4 at home.) More, he afforded coach John Tortorella the freedom to spread out ice time among his six regular defensemen, deviating from a pattern Tortorella had fallen into during last year's playoffs.

WSJ: A Reason for Ranger Hope

The good news is that the interest goes back into your account and the payments for a loan used to buy a home can often be spread over a longer time period than a regular loan.

FORBES: How to Buy a Home Without 20% Down

Bullying behavior can include people who spread rumors about someone or make a person a regular target of gossip, researchers say.

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