It took a great deal of time and effort to gather fibers from plants or animals to make into yarn which could then be made into cloth.

VOA: special.2009.11.04

Well a number of you have spent this past week playing with this particular tool which is a project the course has been working on for some time in an effort to make it easier and more social to actually shop for courses.

在过去的一周里,已经有一部分人开始使用这种特殊的工具了,这门课程一直在致力于这一工具的开发,目的是为了让课程变的更简单,选课更人性化。

哈佛公开课 - 计算机科学课程节选

They were to make the first effort at a space chase.

VOA: special.2009.06.24

"I mean anyone with a little effort can make better food and even cheaper food, but mainly better food than you can buy anywhere.

VOA: standard.2010.07.16

Kites was the first big-budget effort by the Hindi film industry to make a movie which would appeal to mainstream audiences in India and in Western countries.

VOA: standard.2010.07.22