Some previous studies have suggested that challenging your brain with mentally stimulating activities might help.

VOA: standard.2010.06.17

Will you be able to do a lot of good in a for-profit organization,not for profit organization, on the board of your previous school, with your money,with your time?

你们能够做善事吗,在一个非营利机构里行善，在你母校的董事会，贡献金钱和时间？

哈佛公开课 - 幸福课课程节选

No chance of recalling your previous,current,personality.

无法寻回先前的任何人格。

耶鲁公开课 - 死亡课程节选

A kind of a pin used to hold your cloak together, called a fibula, unknown in the previous period.

一种别住披风的别针,称之为扣针,这在之前的时期从未出现过

耶鲁公开课 - 古希腊历史简介课程节选

It's simply material found on page fifteen of your textbook but let's review it. We say this is a beginning course so we assume no previous knowledge.

这是你们教材十五页上的一些简单材料,我们复习一下,我们说这是个入门课程,所以假设之前你们没有任何相关知识

耶鲁公开课 - 聆听音乐课程节选