The first recorded shooting incident by a person who was a professional gunman took place in Texas in eighteen fifty-four.

VOA: special.2010.03.17

A food frequency--by the way, you also have the issue of whether the particular twenty-four hours that a person is interviewed is representative of their diet overall, because you can imagine how much your food intake varies from day to day.

食物摄取频率,顺便说下,还有一个问题,就是在选取的24小时里,测试者,是不是对总体有代表性,因为你可以想象,每天事物的摄入量都是不同的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Working in such a laundry was known as the eight-pound livelihood because a person had to lift an iron weighing almost four kilograms all day.

VOA: special.2010.03.03