音标:['nɒnsp'eʃəlɪst] ;
n. 非专门人员, 非专家
词型变化:名词复数形式 : non-specialists

W: You look so excited. Whats on your mind? M: I am thinking about my Chrisman present. W: What are you going to have? M: A huge toy plane. My mother promised to give it to me if I behave myself before Christmas. Dialogue 2. M: Anna, whats troubling

发表于:2018-12-17 / 阅读(136) / 评论(0) 分类 流利美国口语

The Blurry World Underwater When you open your eyes underwater, things look blurry, but with goggles, everything looks perfectly clear. Why cant we landlubbers focus underwater without goggles? First, we need to explore how our eyes focus when were h

发表于:2018-12-31 / 阅读(64) / 评论(0) 分类 英语听力文摘 English Digest

New design produces flexible panels using only 1-2 percent as much silicon Art Chimes | Washington, DC 19 February 2010 You can use 100 times less silicon. And that's potentially very significant. Harry Atwater Schematic diagram of the light-trapping

发表于:2019-01-13 / 阅读(61) / 评论(0) 分类 VOA标准英语2010年(二月)

Whales, seals and walruses stay warm in chilly water because they have a thick layer of blubber. We humans rely on something like blubberneoprene rubber wet suitsto spend time in cold water. But the thick versions for really icy water are heavy and u

发表于:2019-01-17 / 阅读(48) / 评论(0) 分类 2016年Scientific American(十)月

As these robot submarines accomplish great missions, the possibility of one day melting our way into Europas deep ocean is moving from fiction toward fact. Lets just imagine, there were on a little spacecraft with the capability to melt to the ice, w

发表于:2019-01-22 / 阅读(20) / 评论(0) 分类 自然百科2012年

WILLIAM BRANGHAM: For more on how fire officials are coping with these many fires, we turn to Ron Dunton. He's with the Bureau of Land Management. And he is helping coordinate fire response at the National Interagency Fire Center in Boise, Idaho. Ron

发表于:2019-01-27 / 阅读(57) / 评论(0) 分类 PBS访谈环境系列