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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
In our business news today we have a career check too but first the price of flying goes up. Several major airlines have reinstated a ten-dollar fare increase on many domestic round-trips one day after they dropped it. NPR's Jack Speer Reports: Next
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
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
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