漫射光线

diffused ray的用法和样例：

例句

The direction of the emergent ray is then known, and the angle of deviation may be found.这样就得知出射光线的方向，从而可求得偏向角。

我们该选择死亡吗？

I am speaking not as a Briton, not as a European, not as a member of a western democracy, but as a human being, a member of the species Man, whose continued existence is in doubt. The world is full of conflicts: Jews and Arabs; Indians and Pakistanis

发表于:2018-12-12 / 阅读(56) / 评论(0)

英语演讲

SSS 2008-09-16

This is Scientific American's 60-Second Science. I'm Cynthia Graber . This will just take a minute. Theres a traditional bowl in Korea that locals say makes food safer. And they might be right. The bowl is made of almost 80 percent copper. Copper ion

发表于:2019-01-08 / 阅读(95) / 评论(0)

Scientific American(九)月

原版英语对话：Taking an X-ray(2)

A: My doctor said that I need a chest X-ray. B: Just take your clothes off from the waist up and put this gown on, with the opening in the back. A: What should I do after that? B: You need to come over here and face this plate. A: Am I standing the r

发表于:2019-01-15 / 阅读(80) / 评论(0)

英语情景对话-健康

英语歌曲:Kathy's song

Kathy's song 歌手：Eva Cassidy 《Kathy's Song》 -- (P. Simon, 1965) Simon and Garfunkel I hear the drizzle of the rain Like a memory it falls Soft and warm continuing Tapping on my roof and walls. And from the shelter of my mind Through the wind

发表于:2019-02-04 / 阅读(47) / 评论(0)

好听的英文歌曲

X-ray

A young girl was told she needed an X-ray. She went in and seemed especially nervous. When she came out of the X-ray room, she told her mother, They took a picture of my bones.Yes, dear, replied the mother. Did everything go all right?Sure, said the

发表于:2019-02-07 / 阅读(83) / 评论(0)

趣味英语

你应该知道的11件事

你应该知道的11件事 A silhouette of a human being stands before you. Perhaps an old friend. Perhaps a neighbor. Perhaps a perfect stranger, like me. Here are 11 things we all need you to keep in mind 1. You never really know how much the peopl

发表于:2019-02-09 / 阅读(71) / 评论(0)

实用英语

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学英语单词

a donkey

abide

absolute (magnetic) permeability

assembler pseudo-operations

automatic guide

backfilling thrower