单词：pinniped
- pinnatiped(鸟)蹼足的
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用Mp3背六级单词
[00:01.36]Page 35 and 36 Talk about it!Listen.Point. [00:07.50]a hamster [00:12.23]a lizard [00:16.98]a turtle [00:22.39]a kitten [00:27.25]kites [00:32.00]model cars [00:39.60]puzzles [00:46.24]puppets [00:52.22]toy store [00:58.33]bookstore [01:04.
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Visionary Ideas Could Transform Future NASA Missions NASA, the U.S. space agency, has awarded $3 million in grants for 30 proposals which explore new ideas for Americas next generation space program. The proposals reflect wide-ranging visions of new
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Scientists Testing Space Propulsion by Light 科学家测试太阳能动力 Can the sun provide power for a spaceship to travel to the edge of our solar system? The answer may come from a small satellite. A Delta V rocket carried the satellite into s
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NASA Working Toward Mission to Mars The head of the National Aeronautics and Space Administration, or NASA, said that the space agency is on track to land people on Mars in the 2030s. Charles Bolden is the administrator for NASA. He said that five ye
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An increasingly popular business model lets participating companies give to charity while making a profit. But the approach is blurring the lines between for-profit and not-for-profit organizations and raising questions about the real drivers behind
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