"You needed about a five percent operating margin in order to stay in business over the long haul, especially if you are in a community like this that is growing and you have to invest in new facilities from time to time, recruit new physicians to the area and hire staff."

VOA: standard.2010.02.25

The vast overwhelming majority of people needed to farm land, in order to stay alive.

当时古希腊拥有众多的人口,人们需要农田才能生存

耶鲁公开课 - 古希腊历史简介课程节选

"Houses in our region used to have stilts a few meters above the ground in order to allow flood to stay there,"

VOA: standard.2009.12.21