[化] 孔间距

Supermassive Black Holes 超大质量黑洞 - 8

In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou

发表于:2018-12-07 / 阅读(320) / 评论(0)

超大质量黑洞

温馨夜读II PART4 12.18 Holes in His Mind

[00:00.52] 12.18 Holes in His Mind [00:06.29]Major James Nesmeth had a dream of improving his golf game and he developed a unique method of achieving his goal. [00:14.35]Until he devised this method, he was just your average weekend golfer, shooting

发表于:2018-12-26 / 阅读(44) / 评论(0)

温馨夜读II

趣味青春英语电台第48期:Make a pitch

Idiom: Make a pitch ( make a proposal ) Hit the book: Veterinarian Drowning Scary Yell Labrador Retriever Kangaroo Sanctuary

发表于:2018-12-27 / 阅读(91) / 评论(0)

趣味青春英语

New Data Adds to Understanding of 'Black Holes'

New Data Adds to Understanding of 'Black Holes' WASHINGTON Scientists continue to learn more about black holes in space, places where the pull of gravity is so strong that not even light can escape. Black holes occur after supergiant stars explode in

发表于:2019-01-14 / 阅读(68) / 评论(0)

VOA标准英语2016年(九月)

学个词Learn a Word 第1694-pitch

今天我们要学的词是pitch。Pitch可以是推销的意思，既可以作名词也可以作动词。At the World Economic Forum in Davos, Russia's Prime Minister Dmitry Medvedev made a strong pitch for foreign investment in Russia. 在达沃斯世

发表于:2019-02-06 / 阅读(48) / 评论(0)

英语单词荟萃

美国俚语:一起帮忙,作出贡献 pitch in

今天介绍的俚语是pitch in，pitch in是什么意思呢？最常见得意思是一起帮忙，做出贡献(to join in and help someone with something). 例句： If you could pitch in a little we'd be finished quicker. 如果你能帮忙一下，

发表于:2019-02-09 / 阅读(68) / 评论(0)

美国俚语

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acid radical

alley oop

amorphous semiconductor memory