他们要他用法语唱一首歌。
在大街上,他们会同时唱一首歌,大喊一些没有意义的词语,互相拥抱或制造某种噪音。 。
On a street, they may sing a song at the same time, shout meaningless words, hug each otheror make some kind of noise.
一个种群中所有的雄鲸都唱同一首歌,但是偶尔他们也会发明一首全新的歌。
All the males in one population sing the same song, but occasionally they invent an entirely new one.
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