Our subject this week is tsunamis -- the sea waves often caused by earthquakes.

VOA: special.2009.03.17

A thousand times in a thousand ways anybody who studies the American Civil War period is inevitably asked, "So what caused this war?"

每个研究美国内战史的人,总会不可避免地被人们反复问道,"究竟是什么导致了这场战争"

耶鲁公开课 - 美国内战与重建课程节选

Usually this is a disease that's caused by a defect in a single gene.

通常在疾病是由,单基因缺陷引起时才可行

耶鲁公开课 - 生物医学工程探索课程节选

A lot of damage was caused by this crisis. It is going to take some time for us to grow out of this.

VOA: standard.2009.11.01

But one problem that this also caused is if you're going to put all the books, the documents that you think are scripture,between two covers with the scrolls,you can take one out and put another in.

但这引起了一个问题,如果你要为，那些被认为是圣典的书籍加上封面,如果是卷轴你可以随意取舍。

耶鲁公开课 - 新约课程节选

Because of this, because cystic fibrosis is a disease that's caused by a single gene defect, there's been great interest in trying to treat cystic fibrosis with gene therapy.

就是因为如此,就因为囊胞性纤维症,是一种单基因病,人们对于用基因治疗,治愈囊胞性纤维症产生了很大的兴趣

耶鲁公开课 - 生物医学工程探索课程节选