这些高出的回报中的某些部分会被过高的费用抵消；在20几年前，交易费用是相当高的。

Some of this excess return will have been eaten up by higher costs; trading costs were substantial until the last 20 years.

youdao

youdao

youdao

And so you can see here now you're not just getting relative risks of two, three, or four but you're getting relative risk of a hundred, in this case, massively elevated risk.

可以看出,肥胖人群的患病风险不只高出了三四倍,而是上百倍,风险极大地提高了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选