Often the company would use mules instead of horses to pull its stagecoaches because the Indians had no interest in mules.

VOA: special.2010.04.26

And in particular, dairy maids, whose responsibility was to milk cows, and so they had a very intimate relationship with cattle, often didn't get disease.

特别是挤奶女工,她们的工作就是挤奶,她们与奶牛有紧密的关系,通常不会得天花

耶鲁公开课 - 生物医学工程探索课程节选

The story goes-- He hated working with child actors but he often had to.

故事是这样的-,他痛恨与童星共事，但又时常被迫合作。

耶鲁公开课 - 心理学导论课程节选

But it was often difficult. To protect their towns,the settlers often had to employ people who were expert in the use of firearms.

VOA: special.2010.03.10

There it had less to do often with social forms of reform although that's not entirely true than it had to do with the Civil Rights revolution and the Vietnam War.

通常来说,它与改革的社会形态关联较小,但是它与民权革命和越战的关系,也没有人们认为的那么紧密

耶鲁公开课 - 美国内战与重建课程节选

She often had visions of a magical goddess covered in flowers coming to her in a garden.

VOA: special.2010.04.14

This is the first full paragraph: I don't know how to cure the sourcitis, except to tell you that I can discover a good many possible sources myself for Wise Blood, but I am often embarrassed to find that I read the sources after I had written the book.

这是第一段的全文：,“我不知道如何解决资料来源的问题，只能告诉你,我自己发现了很多《慧血》的材料来源，但我经常觉得很难堪,因为我在完成了那本书后才读的资料。

耶鲁公开课 - 1945年后的美国小说课程节选

Often the mother had to be treated in a hospital for long periods of time.

VOA: special.2009.12.06

Young Woody often had to work instead of attending school because his family was poor.

VOA: special.2010.06.13

The three men had often worked like this in an effort to find gold.

VOA: special.2009.02.04

Treatments are often expensive. In order to get financial compensation from the government, the families had to prove that thimerosal in vaccines caused autism in their children.

VOA: standard.2010.03.23