单词：subsonic ejection
亚音速弹射
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一场网球赛有几局？ How many games are there in the tennis set? 辛吉斯是个网球高手。 Hingis is a top-notch tennis player. 他很有体育道德。 He has good sportsmanship. 他的发球相当棒。 His serve is fantastic. 他在这场
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Scientists are reporting a new way to identify when a heart transplant recipient is starting to reject the new organ. The new technique could help doctors ensure the success of more transplants. The human immune system is programmed to reject foreign
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By VOA Sports Washington, DC 01 December 2007 American tennis player Andy Roddick has given the United States a 1-0 lead over Russia in the Davis Cup tennis finals by beating Dmitry Tursunov in Portland, Oregon. Roddick fired 25 aces and had only fou
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VOA常速英语2007年（十二月）
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