BBC Learning English 英语教学

What is left at the heart of a star explosion? 恒星爆炸后的残余物中心是什么？

Whale song mystery solved by scientists 科学家揭开鲸鱼 “歌声之谜”

Horses replace machines in Welsh forest 马匹代替机器清除英国威尔士森林病木

Pterosaur: new species of flying reptile discovered in Scotland 苏格兰斯凯岛发现新翼龙物种

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