单词:hand-held underwater rock drill
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STEVE EMBER: Im Steve Ember. BARBARA KLEIN: And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we visit two museums housed in one building in Washington, D.C. The Smithsonian American Art Museum recently opened a show on the New Yor
Kenya Moves Full-Steam Ahead on Geothermal Production Kenya is expanding plans to become one of the worlds top geothermal power producers with the start of explorations at a site called Menengai. The government is also aiming to make geothermal Kenya
This is SCIENCE FRIDAY. I'm Ira Flatow. Last August, NASA's Curiosity Rover staked its claim in Gale Crater on the surface of Mars, and since then it's been cruising around, zapping rocks, sniffing the Martian air and snapping some self-portraits. Bu
At Yeshivat Netivot school in Jerusalem, students were evacuated to a safe place and police, ambulances and fire trucks arrived soon after the alarm sounded. Chen Livni, Commander of Jerusalem District in the Home Front Command, says the exercise hel