Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,

发表于:2018-12-31 / 阅读(44) / 评论(0) 分类 英语听力文摘 English Digest

AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be

发表于:2019-01-12 / 阅读(65) / 评论(0) 分类 2015年VOA慢速英语(七)月

AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin

发表于:2019-01-19 / 阅读(58) / 评论(0) 分类 2018年NPR美国国家公共电台12月

Jobs had to fend off the objections of the manufacturing engineers, supported by Rubinstein, 乔布斯还要面对制造工程部门的反对,这些反对者得到了鲁宾斯坦的支持。 who tended to raise practical cost considerations when fa

发表于:2019-02-15 / 阅读(47) / 评论(0) 分类 乔布斯传

Both metaphorically and in reality, the translucency connected the inner engineering of the computer to the outer design. 无论是比喻还是现实,这种半透明都把内部的工程学构造和外壳设计联系在了一起。 Jobs had always

发表于:2019-02-15 / 阅读(39) / 评论(0) 分类 乔布斯传

By the next showing Ive had refined the playful model. 在下一次展示之前,艾弗又完善了这个模型。 This time Jobs, with his binary view of the world, raved that he loved it. 这一次,乔布斯带着他那不是杰作就是狗屎的评

发表于:2019-02-15 / 阅读(55) / 评论(0) 分类 乔布斯传