抗精子毒素

美国国家公共电台 NPR Sperm Counts Plummet In Western Men, Study Finds

RACHEL MARTIN, HOST: A wide-ranging study shows that sperm counts are plummeting throughout the Western world, and scientists don't know why. NPR health correspondent Rob Stein suggests some of the potential reasons. ROB STEIN, BYLINE: In Margaret At

发表于:2018-12-17 / 阅读(54) / 评论(0)

2017年NPR美国国家公共电台7月

VOA标准英语2011--Tom Principato's Family, Friends Inspire

Guitarist Tom Principato has been a mainstay on the Washington, D.C. blues scene for more than 40 years. Tom's new CD was inspired by family, friends and collaborators who helped shape his life on and off the stage. Like many kids growing up in the 1

发表于:2019-01-14 / 阅读(59) / 评论(0)

VOA标准英语2011年(二月)

VOA标准英语2008年-AIDS Research Continues at US Laboratory, After

By Zulima Palacio Washington 08 May 2008 Although the government and researchers halted most clinical trials for an AIDS vaccine, a research institute in Baltimore continues its work on the most deadly virus of our times. Vaccine trials were stopped

发表于:2019-02-04 / 阅读(66) / 评论(0)

VOA标准英语2008年（五月）

Concerns arise over sperm donors

Beijing, Sept. 6 (Xinhua) -- A sperm donation scandal disclosed recently has aroused growing concern in the United States. According to the New York Times' report, Ryan Kramer, the son of a donor, found that he has more than 150 half-siblings - they

发表于:2019-02-04 / 阅读(71) / 评论(0)

英语新闻

Researchers make sperm from stem cell in dish

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(120) / 评论(0)

英语新闻

Japan's antinuclear Tomorrow Party splits into two groups

OSAKA, Dec. 28 (Xinhua) -- Japan's antinuclear Tomorrow Party on Friday split into two groups only a month after its inception due to internal conflicts over personnel matters, local press reported. Yukiko Kada, governor of Shiga Prefecture and the f

发表于:2019-02-08 / 阅读(108) / 评论(0)

英语新闻

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学英语单词

abdominal vascular murmur

accessories after the fact

atmospheric resistance

Bartlett's tinamou

benightens

bernoulli law of large numbers

best western