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[科学美国人技术系列] 60秒科学:轻轻松松开展鲸类研究
录音原文[whale sound] Maybe you've heard that sound. It's an Orca, a killer whale. We know that whales have a kind of language. Families and closely related groups even share dialects.[qh](鲸2012-03-01 编辑:beck
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[VOA慢速-时事新闻] VOA慢速英语(翻译+字幕+讲解):鲸类因压力导致健康问题
鲸类研究人员认为,他们找到了一种新方法来帮助保护这些濒危动物。2019-06-06 编辑:clover