单词：isothermal sound speed
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A: I need to get my high speed internet installed. B: You'll need to make an appointment. A: Could I do that right now, please? B: What day would you like us to do the installation? A: Is Friday good? B: We're only available at 3:00 pm. A: You can't
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EXPLORATIONS - The X- 15 Rocketplane By Marilyn Christiano Broadcast: Wednesday, February 18, 2004 (THEME) ANNCR: Explorations -- a program in Special English by the Voice of America. (THEME) The X-15
Explorations
Lesson 56:Faster than sound! 比声音还快！ First listen and then answer the question. 听录音，然后回答以下问题。 How fast did the winning car go? Once a year, a race is held for old cars. A lot of cars entered for this race last year
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Exercise 5-13: Speed-reading We've already practiced strong intonation, so now we'll just pick up the speed. First I'm going to read our familiar paragraph, as fast as I can. Subsequently, you'll practice on your own, and then we'll go over it togeth
美式英语正音训练
Todd: Jonathan we are talking about conspiracy theories. What about the one where the sound? That when the rocket lands, they have actually audio of the rocket landing and you can't hear the rocket engine, and the rocket engine should be making a rea
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By Paul Sisco Washington 12 October 2007 American test pilot Chuck Yeager flew a plane through the sound barrier on October 14th, 1947. VOA's Paul Sisco takes a look back at the famous feat and the man who first flew at Mach 1. Some say only the Wrig
2007年VOA常速英语（十月）