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明天晚上到外面吃饭怎样？ Would you like to eat out tomorrow evening? 考完试后到外面庆贺一番怎样？ How about a celebration after the exam? 到拐角那家老字号餐馆试一试怎样？ Let's try that time-honoured restaura
生活英语手册
No body had had seen this kind of thing before, so this was the first time and all the people looking at the gel and saying
基因外遗传现象
After we had seen how relatively easy it was to change the switches in mouse embryos, we thought that perhaps the same could be true of human embryos. In IVF, you also have the embryo for a brief peri
基因外遗传现象
If inheritance was not just about DNA, if these gene switches were so important, just what could turn them on or off? Stephanie and Emend Mullins have two children, Karen and Charlotte. When we were t
基因外遗传现象
It showed that there was clearly more to inheritance than simply the coded sequence of DNA. We then realized that we were dealing with what is now known as genomic imprinting. What genomic imprinting
基因外遗传现象
We are on the brink of uncovering a hidden world, a world that connects past and future generations in ways we never imagined possible. What this means is an environmental exposure that your grandmoth
基因外遗传现象
BBC News with Jonathan Izard. Police in Britain say four people have been killed and at least twenty others injured in a terrorist attack outside the Houses of Parliament in London. Those who died included a policeman stabbed outside an entrance of t
中英双语新闻
BBC News with Johnathan Izard. Brazilian police are searching a prison outside the Amazonian city of Manaus after at least 60 inmates died in fighting between rival gangs. Families have been gathering outside the local mortuary to identify the bodies
中英双语新闻
THE PRESIDENT: Good afternoon. Across the country, Americans are concerned about the high price of gasoline. Every one of our citizens who drives to work, or takes a family vacation, or runs a small business is feeling the squeeze of rising prices a
美国总统每日发言
The email was sent by Olov Bygren. He was studying the population records of an obscure town in northern Sweden, Overkalix. What made these records unique was their detail. They recorded births and de
基因外遗传现象
The impact of a famine being captured by the genes in the eggs and sperm, and a memory of this event was being carried forward to affect the grandchildren, generations later. We are changing the view
基因外遗传现象
Rohingya Protest Outside Burmese Embassy in Washington 罗兴伽人在华盛顿缅甸大使馆外游行抗议 A group of Rohingya Muslims from Burma, also known as Myanmar, have staged a brief demonstration outside the Burmese embassy in Washington.
VOA标准英语2014年(三月)
RACHEL MARTIN, HOST: The mainstay of The Washington Post has been journalism, breaking news and award-winning stories. But since Amazon CEO Jeff Bezos bought it three years ago the paper's approach to business and technology has also attracted attent
2017年NPR美国国家公共电台6月
抗议民众在共和党大会外表达不满 More than three years after the U.S. economy fell into deep recession, protesters outside the Republican National Convention point to what they call a continuing crisis of unemployment and homelessness. A
VOA双语新闻 2012年9月