提供德语、英语、法语、意大利语及西班牙语课程，将社交网络的乐趣融入到有趣并有效的词汇扩充和句型构造的工具中。

With courses in German, English, French, Italian and Spanish, Babbel.com blends the pleasures of social networking with playful but effective vocabulary-developing and sentence-building tools.

youdao

好消息就是简易（2到10次会话）心理治疗干预是有效的。

The good news is that brief (2 – 10 sessions) psychotherapy interventions can be effective.

youdao

这项研究不包括自行车的使用，但是 Newman 注意到两个“对自行车最友好”的城市——阿姆斯特丹和哥本哈根——被认为是非常有效率的。

Bicycle use was not included in the study but Newman noted that the two most "bicycle friendly" cities considered—Amsterdam and Copenhagen—were very efficient.

youdao

This is more well-established question of nurture, in terms of moving away from the way we normally teach to what is clearly more effective way.

这更是一种,培养方法问题，从我们平常的教学方法,转移到,明确的更有效的方法。

麻省理工公开课 - 媒体、教育、市场课程节选

One of the things we want to help you do is identify the different classes of algorithms, what their costs are, and how you can map problems into the most efficient class to do the computation.

我们想要教会你们的事情之一就是,学会辨别不同种类的算法，它们的代价是怎么样的，以及怎么样把问题映射到,最有效的算法种类中去做计算。

麻省理工公开课 - 计算机科学及编程导论课程节选

z So in our first case, our first extreme case, would be that the z effective that is felt by electron number 1, is going to be plus 1.

被1号电子感知到的有效的，是+1所以,我们所能做的是计算出，我们从这个。

麻省理工公开课 - 化学原理课程节选