单词：Callytharra Springs
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[00:07.68]each [00:10.11]pron.adj.各个，每个 [00:12.54]Each of them phoned to thank me. [00:16.12]他们每个人都打电话来向 我道谢。 [00:19.70]eagle [00:21.47]n.鹰 [00:23.25]The eagle is a kind of very strong meat-eating bird [00:26
疯狂英语单词王
By the 19th century, the festive season was getting much closer to our modern Christmas. Victorians had Christmas trees, Christmas cards and panto. In fact, panto dates back at least 200 years. Most o
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反射星云是靠反射附近恒星的光线而发光的，呈蓝色。反射星云的光度较暗弱，较容易观测到的例子是围绕着金牛座M45七姊妹星团的反射星云，在透明度高及无月的晚上，利用望远镜便可看到
托福英语
Black History Illuminated by Tracing Lives of Former Slaves Arlington National Cemetery is just outside Washington, D.C. Before it became America's most prestigious military cemetery, it was a thriving community of slaves and then former slaves. Here
VOA标准英语2013年(二月)
Science and Technolgy. 科技。 Visible-light communication. 可见光通信。 Tripping the light fantastic. 与光共舞。 A fast and cheap optical version of Wi-Fi is coming. 一个高速而廉价的光学Wi-Fi即将问世。 AMONG the many new
经济学人科技系列
Science and technology 科学技术 Visible-light communication 可见光通信 Tripping the light fantastic 与光共舞 A fast and cheap optical version of Wi-Fi is coming 一个高速而廉价的光学Wi-Fi即将问世 AMONG the many new gadgets u
经济学人科技系列