鲸类们有自己的“流行歌曲”，它能传遍半个地球。
Whale songs become "hits" that can spread halfway around the globe.
《地球之歌》是第一首公开发布主题关于环境问题和动物处境的歌曲。
"Earth Song" was the first that overtly dealt with the environment and animal welfare.
《地球之歌》是第一首公开发布主题关于环境问题和动物处境的歌曲。
"Earth Song" was the first that overtly dealt with the environment and animal welfare.
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