美国科学60秒 SSS 2013-03-06
时间：2019-01-20 作者：英语课 分类：Scientific American(三)月
Unless you are a convention, speaking middle English is not going to impress a potential romantic partner in 2013. Similarly, male sparrows have to make sure their vocalization is up to date. Researchers analyze 1 three decades of recordings 2 of male sparrows. And birds change their tune 3 over the ears did better with the ladies. The researcher's in the journal animal behavior. While introductory notes of the sparrow's songs did better with the ladies, the middle and end part changed over time. In the 1980’s, songs concluded with longer, high-pitched trills. More recent songs contain serials 4 of clicks in the middle and short low-pitched trill at the end. Researchers found that the male sparrows that adopted the newer songs have higher rates of sexual reproduction. Because you don't want to be seen as behind the times. Indeed, Ch~~ might have had his pick of the ladies in the 14th century. But few today can make heads or tails of his tales.
- We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
- The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。
- a boxed set of original recordings 一套盒装原声录音带
- old jazz recordings reissued on CD 以激光唱片重新发行的老爵士乐
- He'd written a tune,and played it to us on the piano.他写了一段曲子，并在钢琴上弹给我们听。
- The boy beat out a tune on a tin can.那男孩在易拉罐上敲出一首曲子。