They said colonies halfway around the world would be costly to protect.

VOA: special.2010.07.22

First, it's pointing to the beginning of the list, which initially might be down here at but after a while, might be part way through. And to that, I simply add a halfway point, and then I check.

列表中间的一个部分了，然后我求出列表的中值点,然后看看该点的值是不是等于目标值，如果是的话就完成了，如果不是的话，如果中位值大于我要找的目标值。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's halfway up Mount Parnassus and it was thought by the Greeks to be the Omphalos, the navel of the universe, the center in every way. Why?

它坐落在帕尔纳索斯山半山腰上,希腊人称它为Omphalos,是世界之脐,即世界的中心,为什么呢

耶鲁公开课 - 古希腊历史简介课程节选