Jean Mamboundou says opposition parties have failed to heed civil society's call for a single candidate because many believe they can win the election outright on their own.

VOA: standard.2009.08.28

Not only they have failed in bringing about positive change, they actually brought about negative change.

不仅没有实现正面的改变，实际上是带去了负面的改变。

哈佛公开课 - 幸福课课程节选

Some of your response papers that you'll hand in-- " none of them are graded; they are all just graded "pass/failed"-- you'll have to hand them in and then you'll pass.

一些你们要交上来的课后论文-,都不会被打分，都只会有“及格和不及格-,你们必须交论文，然后你们就及格了。

哈佛公开课 - 幸福课课程节选

Dialysis is done millions of times per day in this country and around the world, and keeps people alive when their kidneys have failed and they wouldn't survive for even a week without dialysis.

在美国乃至全世界,每天进行着上百万次的透析,肾脏丧失功能的病人靠透析得以存活,如果没有透析他们活不过一个星期

耶鲁公开课 - 生物医学工程探索课程节选