气体浓度透镜;气体透镜

'The Diamond Lens' by Fitz-James O'Brien, Part One

Our story today is called The Diamond Lens. It was written by Fitz-James O'Brien. We will tell the story in two parts. Now, here is Maurice Joyce with part one of The Diamond Lens. When I was ten years old, one of my older cousins gave me a microscop

发表于:2018-12-08 / 阅读(443) / 评论(0)

2018年VOA慢速英语(二)月

VOA慢速英语2011--Short Story: ‘The Diamond Lens’ by F

AMERICAN STORIES - Short Story: The Diamond Lens by Fitz-James O'Brien (Part 2) Now, the Special English program, AMERICAN STORIES. (MUSIC) Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and

发表于:2018-12-16 / 阅读(50) / 评论(0)

2011年VOA慢速英语(六)月

'The Diamond Lens' by Fitz-James O'Brien, Part Two

Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and final part of the story. Here is Maurice Joyce with part two of The Diamond Lens. When I was a child, someone gave me a microscope. I spent

发表于:2019-01-03 / 阅读(295) / 评论(0)

2018年VOA慢速英语(三)月

Gas Shortage Intensifies in Mexico

Broadcast: Feb 13, 2003 Demand for electricity is growing in Mexico, but the state-owned oil company, known as Pemex, is reducing the amount of natural gas it can provide for electrical generation. Th

发表于:2019-01-03 / 阅读(77) / 评论(0)

VOA2003（上）-国际时讯

VOA慢速英语2011--Short Story: ‘The Diamond Lens,’ Par

AMERICAN STORIES - Short Story: The Diamond Lens, Part 1, by Fitz-James O'Brien SHIRLEY GRIFFITH: Now, the Special English program, AMERICAN STORIES. (MUSIC) Our story today is called The Diamond Lens. It was written by Fitz-James O'Brien. We will te

发表于:2019-01-12 / 阅读(65) / 评论(0)

2011年VOA慢速英语(六)月

VOA常速英语2008年-Israel to Redistribute Gas Masks Amid Fears of

By Robert Berger Jerusalem 02 April 2008 Israel is strengthening security on its home front in a sign of war jitters. As Robert Berger reports from VOA's Jerusalem bureau, Israel is casting a wary eye toward Iran. Israel's security Cabinet has decide

发表于:2019-01-30 / 阅读(75) / 评论(0)

VOA常速英语2008年（四月）

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学英语单词

additions and betterments

antiscorbutic value

as blind as a mole

Barkhausen-Kurtz oscillation