单词：vertex of surface
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MICHEL MARTIN, HOST: Mars is about to get a new visitor from Earth tomorrow. If all goes well, a NASA probe called InSight will land near the Martian equator. Its mission is to study the interior of the planet. But, before it can carry out its missio
2018年NPR美国国家公共电台11月
地道美语听力播客English as a Second Language Podcast (ESLPod)，是一家位于美国加州洛杉矶的英语教育研究机构推出的英文听力会话，于2005年7月23日首播， 主播Dr. Jeff McQuillan为南加州大学的语言学博士
地道美语播客
The National Oceanic and Atmospheric Administration (NOAA) confirms that some of the oil escaping from that ruptured well in the Gulf of Mexico is staying beneath the surface, raising new environmental concerns about the disaster. BP says there is no
VOA标准英语2010年(六)月
Climate change negotiators from 173 countries have agreed on an agenda after days of bickering over the scope of talks left little time for substantive discussions. The disagreement highlighted deep divisions between developing and rich countries on
英语新闻
图 graph 子图 subgraph 有向图 digraph(directed graph) 无向图 undigraph(undirected graph) 完全图 complete graph 连通图 connected graph 非连通图 unconnected graph 强连通图 strongly
实用英语
Marit Larsen 从那个红遍全球的少女组合M2M里走出来的Marit Larsen并没延续M2M的流行摇滚，而是选择了清澈的民谣曲风，用她时而俏皮时而的甜蜜的嗓音来吟唱她自己写的小曲儿，带给听者如沐春风的清新感觉。 中英歌词: It's such a funny sensation to be so happy that
音乐咖啡厅
LOS ANGELES, June 18 (Xinhua) -- Microsoft Corp. unveiled Monday a family of tablets dubbed Surface, built on Windows 8, at an event in Los Angeles. Microsoft Chief Executive Steve Ballmer introduced the company's Surface family of tablets. The devic
英语新闻
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加州英语分级G6