旋转气动工具

Intelligent Crows Use Tools

Intelligent Crows Use Tools What do otters, chimpanzees, and one species of crow have in common? All three are animals. They also use tools. Scientists have long known that a crow native to New Caledonia is able to use tools. The birds use them to re

发表于:2018-12-16 / 阅读(39) / 评论(0)

2016年VOA慢速英语(九)月

ESL Podcast 907 – Buying Tools at a Hardware Store

Chuck: Just remember that we have a lot to accomplish today, so lets just get what we need and go, okay? Ayaka: Sure, we just need a few tools for our DIY project. The power tools are over there. Chuck: Whoa, were not getting power tools. We just nee

发表于:2019-01-01 / 阅读(46) / 评论(0)

地道美语播客

60秒科学:On-The-Job Chimps Use Multiple Tools

To do a job right, you need the right tools. Even a chimp knows that. According to a study in the American Journal of Primatology, chimps in the Congo use multiple tools to capture army ants. Youve probably seen footage of chimps using sticks to har

发表于:2019-01-07 / 阅读(92) / 评论(0)

60秒科学

DEVELOPMENT REPORT - Tools for Development

DEVELOPMENT REPORT – July 29, 2002: Tools for Development By Jill Moss (Photo -CARE) This is the VOA Special English Development Report. Building things or making clothes can be difficult in develop

发表于:2019-01-30 / 阅读(74) / 评论(0)

农业与发展

Helping Others 美国方式：帮助他人

Christmas in America means different things to different people. To some people, Christmas means brightly wrapped packages under a decorated tree. To others, it means family reunions and a wonderful meal together. To Christians, it means Jesus' birth

发表于:2019-02-08 / 阅读(58) / 评论(0)

实用英语

美国习惯用语:320 thin air; come up for air

今天我们要讲的习惯用语都有air这个词。大家都知道air是空气。早在十七世纪，意大利科学家伽利略发现空气似乎没有实质却有重量。后来人们进一步发现高山顶上的空气要比海平面上的空气

发表于:2019-02-18 / 阅读(103) / 评论(0)

美国习惯用语

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学英语单词

blot on one's escutcheon

blowing blister

BMPG

bottom blow acid converter steel