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Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod
Academic ListeningPart 7 - Academic readingThis programme was first broadcast in 2001. This is not an accurate word-for-word transcript of the programme. ANNOUNCER: Its time for Academic Listening - a series for students at English-speaking universi
Scientists: Spiders Use Electric Fields to Move through Air Scientists have long wondered how spiders can use the webbing they make to fly. The 19th century English naturalist Charles Darwin commented on their behavior when very small spiders landed
At the mall, my wife and I picked up some hardware items, including a handsaw. We were heading back to the car when we passed a steakhouse. Let's try it.
Motional Induction Last time, we talked about motional induction , a phenomenon by which the ocean generate s a magnetic field. It works like this: earth has its own magnetic field. The ocean has plenty of charged atoms in it, in the form of dissolve
其实,不同的阅读是有不同的目的的。雅思考试时的阅读只有一个目的只有一个那就是为解题服务。 雅思阅读中的题目虽然种类纷繁复杂,其实说到底无外乎主旨题与细节理解题。而解题的过