无动力推进的下滑

SSS 2008-07-08

This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute. Whales and dolphins were molded by evolution to glide through water. Weve been trying to create streamlined designs ourselves for structures such as win

发表于:2019-01-08 / 阅读(47) / 评论(0)

Scientific American(七)月

最讨厌的家务活大调查：英国人最讨厌清理烤箱

Cleaning the oven is the most hated chore in UK households, a new study has revealed. 一项新调查发现，清理烤箱是英国人最讨厌干的家务活。 Ironing is the second most disliked task (23%), followed closely by changing the bedshee

发表于:2019-02-01 / 阅读(30) / 评论(0)

实用英语

little mermaid的故事

little mermaid的故事The following is an annotated version of the fairy tale. I recommend reading the entire story before exploring the annotations, especially if you have not read the tale recently. FAR out in the ocean, where the water is as blue

发表于:2019-02-03 / 阅读(58) / 评论(0)

英美文化

认真看待自己，才会得到他人的尊重

I stand on the edge of the dance floor watching couples glide, spin, and groove as they dance the West Coast Swing. The tempo of the music is fast, but the beating of my heart is faster. I want to dance, but I'm afraid I'm not good enough. 我站在舞

发表于:2019-02-03 / 阅读(40) / 评论(0)

阅读空间

无希望的工作 Work without Hope

Work without Hopeby Samuel Taylor ColeridgeAll Nature seems at work. Slugs leave their lairThe bees are stirringbirds are on the wingAnd winter slumbering in the open air,Wears on his smiling face a dream of Spring! And I the while, the sole unbusy t

发表于:2019-02-06 / 阅读(62) / 评论(0)

实用英语

美式英语音标分类说明

发音: 美国英语语音 consonants 辅音 vowels 元音第一按发音方法分类(辅音)： manner (发音)方式 1.stop 爆破音--是指发音器官在口腔中形成阻碍,然后气流冲破阻碍而发出的音。 2.fricative 摩擦音--由发

发表于:2019-02-26 / 阅读(52) / 评论(0)

英语口语

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学英语单词

airborne radio-iodine

ancyloid

atlantis ansa

avalanche-development constant

bathing beauties

be chilled to the bone