Both are tall,thin men with big ears.

VOA: special.2009.07.24

Our ears have only evolved to respond to sound with very high sensitivity and high selectivity.

人类的耳朵对声音的反应,极为敏感，也极有选择性。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

With the big ears, Dumbo?

就是大耳朵的小飞象？

哈佛公开课 - 幸福课课程节选

"So we are the eyes and ears of the community." "And with our help,by documenting and having credible information and scientific data, we can help them do their job better."

VOA: standard.2010.05.06