观察光学系统

They Did It With Mirrors!

They Did It With Mirrors! You can’t stand in front of the paintings of the old masters and not wonder, how did 1) Frans Hals make that lace seem so real? How did 2) Van Dyck make his armor so gleami

发表于:2018-11-28 / 阅读(146) / 评论(0)

疯狂英语2003年

走进剑桥大学第8期:牛顿的苹果树

Newtons Apple Tree 牛顿的苹果树 Newton was an English physicist and mathmatician,and was the greatest scientist in his era. 牛顿是一位英国物理学家和数学家，也是他那个时代最卓越的科学家之一。 Isaac Newton was bor

发表于:2018-12-18 / 阅读(60) / 评论(0)

走进剑桥大学

地道英语对话：An Apartment Viewing(2)

A: How are you doing? B: Everythings fine with me. A: What can I do for you today? B: Is it possible for me to view the apartment today? A: Unfortunately, you will not be able to view it today. B: Why cant I view it today? A: Youll need to make an ap

发表于:2019-01-20 / 阅读(47) / 评论(0)

地道英语对话-租房

地道英语对话：An Apartment Viewing(3)

A: Hows it going? B: Im fine, thank you. A: Did you need help with something? B: If I could, I would like to view the apartment sometime today. A: That wont be possible today. B: Why is that? A: You can only view the apartment with an appointment. B:

发表于:2019-01-20 / 阅读(68) / 评论(0)

地道英语对话-租房

英语听力：自然百科穿越银河系的旅行 Through Milky Way—14

Its a stunning location, but its also mysterious. These stars are not just close together. They are on the move at enormous speeds. Going to the heart of a galaxy might not be the similar to going to an amusement park. The rides are some similar to h

发表于:2019-01-22 / 阅读(170) / 评论(0)

自然百科2011年

可以调焦的眼镜?

可以调焦的眼镜? They may look like an ordinary pair of spectacles, but these glasses are at the forefront of a revolution in eyewear. 它们看起来像普通的眼镜，但是是眼镜改革的最前沿。 Part of a new line of electronic eye

发表于:2019-02-07 / 阅读(64) / 评论(0)

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学英语单词

a formal

agglutinating language

apteryxes

asna

automatic balance

axis of easy magnetization