双曲位置面

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

发表于:2018-12-18 / 阅读(83) / 评论(0) 分类 2018年NPR美国国家公共电台11月

Julianna: Ha ha! The wicked witch is dead! Hugo: What are you talking about? Julianna: Bettina is stepping down as chairperson of the committee. I thought this day would never come. Hugo: Thats a big surprise. I never thought Id live to see the day w

发表于:2019-01-01 / 阅读(94) / 评论(0) 分类 地道美语播客

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

发表于:2019-01-01 / 阅读(95) / 评论(0) 分类 地道美语播客

分集介绍:指数,log,对数微分;双曲函数 Exponential.and.log.Logarithmic.differentiation;.hyperbolic.functions

发表于:2019-01-05 / 阅读(377) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

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

发表于:2019-01-30 / 阅读(106) / 评论(0) 分类 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

发表于:2019-01-30 / 阅读(102) / 评论(0) 分类 英语新闻

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

发表于:2019-02-06 / 阅读(131) / 评论(0) 分类 音乐咖啡厅

WASHINGTON, March 12 (Xinhua) -- The Obama administration on Tuesday said that its position regarding the Falkland Islands, known as the Malvinas to the Argentines, remains unchanged, but acknowledged that the Falklands residents have clearly express

发表于:2019-02-14 / 阅读(104) / 评论(0) 分类 英语新闻

WASHINGTON, March 12 (Xinhua) -- The Obama administration on Tuesday said that its position regarding the Falkland Islands, known as the Malvinas to the Argentines, remains unchanged, but acknowledged that the Falklands residents have clearly express

发表于:2019-02-14 / 阅读(114) / 评论(0) 分类 英语新闻

BEIJING, Dec. 7 (Xinhua) -- China's Foreign Ministry on Friday reiterated its position on current China-Japan relations, urging the Japanese side to make tangible efforts to properly address relevant issues in order to improve bilateral ties. Spokesm

发表于:2019-02-14 / 阅读(89) / 评论(0) 分类 英语新闻

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

发表于:2019-02-17 / 阅读(101) / 评论(0) 分类 英语新闻

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发表于:2019-02-19 / 阅读(114) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(105) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(112) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(101) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(112) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(110) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(102) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(118) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(114) / 评论(0) 分类 加州英语分级G6