n. 手;手工;帮助;指针
v. 交;递;给
[网络] 汉德;人手;手形
(hand- 的复数)

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Don't be fooled by those big bovine eyes and the mouth slowly chewing cudcows have a magnetic personality. At least thats the claim made by German researchers in the

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 Scientific American(八)月

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 kneel [ ni:l ] She knelt to pray. v. 跪

发表于:2018-12-30 / 阅读(84) / 评论(0) 分类 每日攻克5词

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. If you have a dog, you know you gotta walk it. But do you know how it walks? Well, if you have no idea which foot Fido puts forward when, youre in good c

发表于:2019-01-08 / 阅读(60) / 评论(0) 分类 Scientific American(二)月

AS IT IS 2014-09-03 Virginia Site Tests Drones for FAA Rules 维吉尼亚测试无人机以帮助航空管理局制定发展规则 The Federal Aviation Administration, or FAA, has chosen a university town in Virginia as one of six places to test dron

发表于:2019-01-12 / 阅读(42) / 评论(0) 分类 2014年VOA慢速英语(九)月

China's first permanent magnetic monorail train has successfully completed a test run in the city of Qingdao, in Shandong Province. The high-tech urban transportation system features strong climbing capacity, a small turning radius, energy efficiency

发表于:2019-02-05 / 阅读(69) / 评论(0) 分类 cctv9英语新闻2016年

The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field

发表于:2019-02-06 / 阅读(61) / 评论(0) 分类 英语新闻