文章列表

• 1.【英语时差8,16】如何找出最短路径（上）
• If you ever had a paper route or any other job that took you through a series of streets, you may have spent some time working out the quickest way to...
• 2.【英语时差8,16】别担心！你不会秃头的（下）
• Generally we lose between twenty-five and a hundred and twenty-five hairs per day. Most of the time, new hairs grow from the old follicles. For some r...
• 3.【英语时差8,16】别担心！你不会秃头的（上）
• If you find hairs in the bathtub after a shower or you find hairs stuck in your comb, dont worry; youre not necessarily going bald. And yet if you kep...
• 4.【英语时差8,16】鹰的眼睛（下）
• To imitate this lens, you can use a slide projector and whats called a negative lens the type used in glasses for people with myopia, or near-sightedn...
• 5.【英语时差8,16】鹰的眼睛（上）
• An eagle circling three hundred feet in the air looks to us like a dot in the sky. But even from that height, the eagle is scanning the ground for pre...
• 6.【英语时差8,16】烘干机如何工作（下）
• The molecules of surfactant used in dryer sheets have unusually large fatty sides, and their water side is good at grabbing onto fabrics. Mix it with ...
• 7.【英语时差8,16】烘干机如何工作（上）
• Throw your laundry into the dryer without a dryer sheet, and it comes out a rumpled, staticy mess. Toss one in and the results are much better. How ca...
• 8.【英语时差8,16】身体被冻时发生的变化（下）
• At this point your endangered skinyour ears and nose, or maybe your toeswill turn a bright red, and youll start wishing you were indoors. If the air g...
• 9.【英语时差8,16】彗星研究者（下）
• He figured if the comet was only as high as the upper atmosphere, it should appear to be in different parts of the sky to different observers. Thats b...
• 10.【英语时差8,16】泰国斗鱼（下）
• As it turns out, bystanders that have witnessed a fight between two rivals are much less likely to challenge the winner of the fight than they are to ...