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                    • [英語聽力] 科學(xué)60秒:干細(xì)胞也需要鍛煉

                      Hi. I’m running. I’m also telling some of my stem cells what to do right now. Well, I probably am, based on a new study with mice. We have what are called mesenchymal stem cells. This type of...

                      2011-09-18 10:00
                    • [英語聽力] 科學(xué)60秒:飛行的代價(jià)

                      More than 60 mammal species—like the famous flying squirrel—have adapted the ability to sail from tree to tree. , yes. But what’s the evolutionary advantage? One theory suggests gliding save...

                      2011-09-04 10:00
                    • [英語聽力] 科學(xué)60秒:猴子:若為寧靜故,食物皆可拋

                      What does a bookworm have in common with a marmoset? They both like a little quiet. Or so say scientists in the Royal Society journal Biology Letters. As urban areas continue to expand, their ...

                      2011-08-29 10:00
                    • [英語聽力] 科學(xué)60秒:2010年有趣新物種榜單新鮮出爐

                      A jumping cockroach. A glowing mushroom. These are three of scientists’ picks for the Top Ten New Species described in 2010. The list is put together by the International Institute for Species ...

                      2011-08-15 10:00
                    • [英語聽力] 科學(xué)60秒:為何小孩走不了遠(yuǎn)路

                      If you’ve ever had to pick up and carry a tired child through the mall, you know that walking sometimes the toddlers. Now scientists think they know why. The results appear in the Journal of Ex...

                      2011-06-13 08:30
                    • [英語聽力] 以少量的水種植莊稼 (2)

                      農(nóng)業(yè)部有一個(gè)大豆胚質(zhì)的收藏,是關(guān)于代代相傳的基因物質(zhì)的。 Tommy Cater Monsanto,DuPont,SyngentaThe Agriculture Department has a soybean germplasm collection, a collection of genetic material pass...

                      2008-11-24 00:00
                    • [英語聽力] 以少量的水種植莊稼 (2)

                      農(nóng)業(yè)部有一個(gè)大豆胚質(zhì)的收藏,是關(guān)于代代相傳的基因物質(zhì)的。 Tommy Cater Monsanto,DuPont,SyngentaThe Agriculture Department has a soybean germplasm collection, a collection of genetic material pa

                      2008-11-24 00:00
                    • [英語聽力] 以少量的水種植莊稼 (1)

                      科學(xué)家們正在利用生物技術(shù)以及傳統(tǒng)的育種方法,培育節(jié)水作物來養(yǎng)活不斷增長(zhǎng)的世界人口。 Carolina,Thomas("Tommy" )CarterScientists are working to develop crop plants that can reduce the amount of wat...

                      2008-11-23 00:00
                    • [英語聽力] 樹木也能發(fā)電? (2)

                      Mershin和他的同事都想弄明白一棵樹能夠產(chǎn)生可以被測(cè)量到的足夠電量的方法和原因。Mershin and his colleagues wanted to understand how a tree could generate enough power to be measured and why it would...

                      2008-09-27 00:00
                    • [英語聽力] 樹木也能發(fā)電? (1)

                      樹木會(huì)產(chǎn)生電流,你相信么?樹木產(chǎn)生的電量足夠給電池充上電以運(yùn)行一個(gè)網(wǎng)絡(luò)來追蹤偏遠(yuǎn)地區(qū)的森林火災(zāi)。 摘要:Andreas Mershin,MassachusettsYou might be surprised to learn that trees generate small amou...

                      2008-09-26 00:00