只有雄鲸才歌唱，并且每个都有自己的音色。
Only male humpbacks sing, and each group of whales sings its own tune.
雄鲸将叹息，哭泣和尖叫组合起来，形成有特色的歌声。
Male humpback whales combine groans, cries and shrieks into repeated patterns to make up their signature song.
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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