The beauty of the experimental design is that it effectively rules out confounding variables; acoustic isolation assures that the female can respond only to the song structure itself.
实验设计的美妙之处在于它有效地排除了混淆变量；声学隔离确保了雌性只能对鸣声结构本身做出反应。
Arie played a flute in the introduction to her first song, which she said was about the beauty of nature.
阿里用长笛演奏了她的第一首歌的序曲。她说，这是一首赞美大自然的曲子。
And now I can't get the "Gaston Song" from Beauty and the Beast out of my head, the part about eating 5 dozen eggs every morning to become strong.
现在我不能把美女与野兽中的“加斯东歌”排出我的脑海，这部分是关于每天早上吃5打鸡蛋将成为强劲。
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