[建] 过(四)氧化铬

美国英语听力80篇1 Lesson02

[00:09.95]Six weeks ago, the movie Erin Brockovich opened the United States. [00:16.95]So far, it has earned at least 100,000,000 dollars. [00:22.47]It tells a true story about a young woman who helped people in a California town gain money from an e

发表于:2018-12-03 / 阅读(153) / 评论(0)

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Could an element commonly found in Americans` tap water caused cancer? A nonprofit environmental group is sounding the alarm about something called chromium-6. The U.S. government says high levels of it in the air can be carcinogenic, meaning they ca

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This is Scientific Americans 60 Second Science, I am Cynthia Graber, this will just take a minute. Compounds found in the herb thyme have antibiotic properties. Now scientists have demonstrated that thyme might have a future role in fighting acne. A

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【电影预告片填空】生存者

Help! There's someone hurt! - What are you hearing, Sullivan? - According to first responders it was a bomb. - How many? - Four of yours and five passersby. - Have anyone claimed responsibility? - We found this. - Do you think she's dead? - We can't

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日光将薄的塑料屏障变成了杀菌材料

Daylight Turns Thin Plastic Barrier into Germ-Killing Material Daylight-powered germ-killing equipment may someday help protect health workers from deadly microorganisms like Ebola virus disease. That is a finding from a study published in the journa

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1. US intelligence officials say the 24 suspects arrested in an airplane terror plot were targeting ten flights from Britain to a number of US airports. They apparently planned to ignite a peroxide -b

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VOA慢速英语2013 AS IT IS 2013-05-23 Pollution Forces Residents from California Town

AS IT IS 2013-05-23 Pollution Forces Residents from California Town Hello. Im Jim Tedder in Washington. Welcome to a special edition of As It Is. Seventeen years ago, an American energy company paid hundreds of millions of dollars to settle legal cla

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pbs高端访谈:危险化学品六价铬污染美国饮水系统

JEFFREY BROWN:And now to part two of our investigative look at the safety of America's drinking water. Science correspondent Miles O'Brien reports on the toxic chemical made famous in the movie Erin Brockovich, its potentially harmful effect on human

发表于:2019-01-27 / 阅读(182) / 评论(0)

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pbs高端访谈:保护公民免受污染饮水的威胁

GWEN IFILL: Now NewsHour science correspondent Miles O'Brien begins a two-part look at America's drinking water, and the regulatory system that is supposed to guarantee its safety. His report is the result of a partnership with the Center for Public

发表于:2019-01-27 / 阅读(133) / 评论(0)

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Vitamin C and DNA

67 维生素C能否破坏DNA？ DATE=7-11-01 TITLE=SCIENCE REPORT - Vitamin C and DNA BYLINE=Nancy Steinbach (Start at 59

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早安英文第434期:各种护肤品用英语怎么说

benzoyl 苯甲酰 peroxide 过氧化物 inflammation 发炎 hyaluronic acid injections fillers 注射玻尿酸填充 facial cleanser 洗面奶 firming facial toner 紧致爽肤水 sunscreen/sunblock 防晒霜 facial mask 面膜 body lotion 润体乳

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早安英文

英语听力文摘 English Digest 196、不锈钢的秘密

Why Stainless Steel Does Not Rust But Other Metals Do? 不锈钢（Stainless Steel）指耐空气、蒸汽、水等弱腐蚀介质和酸、碱、盐等化学浸蚀性介质腐蚀的钢，又称不锈耐酸钢。实际应用中，常将耐弱腐蚀介质

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英语听力文摘 English Digest

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学英语单词

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Adoisine

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Bir Bou Rekba

blirtie