The first iPhone 4 class action lawsuit has been filed in the U.S. District Court for the District of Maryland and, as expected, it focuses on the phone's reception issues.

美国马里兰州地区法院受理了首个iPhone 4 集体诉讼案，该案的焦点是该手机的天线问题。

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Conclusion Synthetic training method on land can prevent seasickness better than traditional training method and can prevent from seasickness occurrence effectively under 3, 4 class sea conditions.

结论在陆上进行综合训练法预防晕船病的效果优于传统训练法，在3、4级海况时能有效预防晕船病发生。

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If you observed a four-year-old child, for example, my daughter is 4 years old; you might read up on Piaget's stages of cognitive development we covered those in class.

如果你观察一个四岁的孩子，例如我四岁的女儿，你可能要先研读皮亚杰的认知发展阶段理论，这一理论是我们在课堂上讲过的。

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I'm guessing the average number in the class now is probably about 3 or 4, maybe even lower.

我猜这次的平均数字大约在3或者4,甚至可能更低

耶鲁公开课 - 博弈论课程节选

So I ended up sleeping maybe 4 or 5 hours and going to class.

结果我只能睡四五个小时，然后就要去上课。

耶鲁的忙碌生活 - SpeakingMax英语口语达人

I live in words Backban I walk a great deal, I live in the backban walking into class and home, that's 3 or 4 miles right there.

我生活在文字中,我常常走路，我住在,走来上课,走回家去，我家离这里大概三四英里远。

麻省理工公开课 - 电影哲学课程节选