material scientists admire spider silk for being lightweight and strong.now another arthropod product is getting into the act insect cuticle,the tough flexible material is inside insect skeleton.researchers at harvard * institute for biological inspi

发表于:2018-12-02 / 阅读(66) / 评论(0) 分类 Scientific American(十二)月

图片1 metal n. 金属 例句:This metal is harder than that one. 这种金属比那种硬。 metallic adj. 金属(性)的 例句:Fannie' s shovel struck against something metallic when she wasplanting flowers in the garden. 当芬妮在花园里种

发表于:2018-12-04 / 阅读(49) / 评论(0) 分类 漫画搞定六级词汇(文本+音频)

Exhibition and Recommendation Dialogue 1 -Hello,I am calling because I saw an ad. in the International Business Daily about your trade fair. -Yes.Let me give you some information about it.The trade fair will be in Shanghai from March 14 to 24. -Excu

发表于:2018-12-25 / 阅读(59) / 评论(0) 分类 公务员口语

China is working on next-generation bullet trains with a maximum operational speed of 400 km per hour that will be ready by 2020 for markets linked to the Belt and Road Initiative, the country's top railway vehicle maker said. 国内最大的轨道客车

发表于:2019-01-07 / 阅读(183) / 评论(0) 分类 英语新闻

alienate v. 使疏远 allegory n. 寓言;讽喻 alleviate v. 使减轻 alliance n. 联盟,同盟 allocate v. 分配;定位置 alloy n./v. 合金,融合 allude v. 提及;暗指 allure v./n. 引诱

发表于:2019-01-11 / 阅读(99) / 评论(0) 分类 英文语法词汇

美国航空航天局科学家测试新型飞机 The U.S Aeronautics and Space Administration, NASA, is commonly associated with space exploration, but aeronautics is still a big part of the agencys research. Engineers at its Aeronautics Research Cen

发表于:2019-01-26 / 阅读(115) / 评论(0) 分类 英语新闻