镶钴铬钨合金阀

科学美国人60秒 SSS Bat Chatter Is More Than a Cry in the Dark

When we humans talk to other humans, the sounds we make all have very specific meanings. When I say apple you immediately imagine something that has the characteristics of an apple. Yossi Yovel, a neuroecologist at Tel Aviv University in Israel. And

发表于:2018-12-24 / 阅读(27) / 评论(0)

2017年Scientific American(一)月

科学美国人60秒 SSS 蝙蝠的叫声传递了感情

When we humans talk to other humans, the soundswe make all have very specific meanings. When Isay apple you immediately imagine something thathas the characteristics of an apple. Yossi Yovel, aneuroecologist at Tel Aviv University in Israel. Andthe q

发表于:2019-01-20 / 阅读(55) / 评论(0)

2018年科学美国人1月

幽默笑话两则（双语）

第一则：聪明的儿子 One day, the father lets eight-year-old son send a letter. The son took the letter. The father then remembered he didn't write address and addressee's name on the envelope. After the son comes back, the father asks him: Yo

发表于:2019-01-30 / 阅读(28) / 评论(0)

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VOA常速英语2008年-Pope to Address UN General Assembly on Friday

By Margaret Besheer United Nations 17 April 2008 Pope Benedict XVI arrives in New York City Friday and his first stop will be at the United Nations, where he will address the General Assembly. The pontiff will also meet with the U.N. Secretary-Genera

发表于:2019-01-31 / 阅读(57) / 评论(0)

VOA常速英语2008年（四月）

Gettysburg address

Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal. Now we are engaged in a great civil war, testing whether that nation, or

发表于:2019-02-08 / 阅读(92) / 评论(0)

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学个词Learn a Word 第1441课 address

今天我们要学的词是address。Address, 作为动词，意思是讨论，处理。中国国家副主席习近平将于本周访美。白宫在一份声明中表示， The two sides will address practical issues that are important to both countr

发表于:2019-02-08 / 阅读(59) / 评论(0)

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british anti - lewisite