About one-third of Southern white families at one time or another had at least a toehold in slave ownership.

大约三分之一的南方白人家庭,在某一段时期至少都拥有过奴隶

耶鲁公开课 - 美国内战与重建课程节选

It sells for about 20 cents a pound, so that represents about one-third of a trillion dollars.

它的价格为20美分每磅，这价值,大约为3000多亿美元。

麻省理工公开课 - 固态化学导论课程节选

In fact, the assets that the Norwegian Government owns is about two-thirds oil and one-third government pension fund assets.

实际上，挪威政府所持有的资产中,大概有三分之二的石油,和三分之一的政府养老基金。

耶鲁公开课 - 金融市场课程节选