The finding raises questions about the long-standing practice among doctors to consider how old their patients look as part of routine physical exams.

医生通常把病人的外表年龄作为日常身体检查的一部分，而该研究结果对此提出了质疑。

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For example, it was a long-standing practice among local farmers to dig what they called zai—shallow pits that collected and concentrated scarce rainfall onto the roots of crops.

举例来说，在长期实践中，当地农夫发明了一种方法：挖掘出浅地坑种植农作物，这种被当地人称作“zai”的浅地坑同时也可以收集与存储稀少的雨水以灌溉农作物。

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In India, where by long-standing practice most new wives leave home to move in with their husbands' families, the Hindi term paraya dhan refers to daughters still living with their own parents.

在印度，在那些“大部分新娘离开娘家搬去和夫家住”已成为长期做法的地区，北印度的paraya dhan指的是依然和自己的父母生活在一起的女儿。

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The prime minister, critics say, is not only damaged by guilt-by-association with Mr McBride, but must also answer for a long-standing practice of employing advisers known to use underhand tactics.

BBC: Key people in e-mail smear row

"The United States communicated to the Iranians that we will continue to conduct surveillance flights over international waters consistent with long-standing practice and our commitment to the security of the region, " Mr. Little said.

WSJ: U.S. Fighters Warned Off Iranian Jet

This strong reaction by Western credit markets contrasts sharply with the long-standing practice of Free World suppliers who, as demanded by Moscow, formerly agreed to conduct virtually all trade on an "open account" basis.

CENTERFORSECURITYPOLICY: Center for Security Policy | Bridge Loans To Nowhere: A Central Bank Safety Net For Moscow?