A new study finds that there are two factors at work: the knowledge of where the sound is coming from and the unfortunate design of our ear canals.

一项新的研究发现，有两个因素在发挥作用：一个是听众对于声音来源的认识，另一个是我们耳道那种令人遗憾的形状。

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More people should take up the deep study of how programming tools work, come out of their shells, and contribute to the overall communities of those who seek such knowledge.

应该有更多的人来从事有关编程工具如何工作的深入研究，各抒己见、博采众长，为寻求此类知识的整个用户社区作出贡献。

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We should treasure the chance to study knowledge and show some respect to the hard work of teacher.

我们应该珍惜学习知识的机会，还有尊重老师的辛勤工作。

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Now, researchers are taking the knowledge from that study to work toward an antibody treatment for swine flu, the 2009 H1N1 virus that has sickened hundreds of people worldwide.

CNN: 1918 flu survivors share memories as research continues