单词：cement rock(stone)
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Broadcast: August 4, 2003 This is Bill White with the VOA Special English Development Report. Safe drinking water has always been rare and valuable. Throughout the world, drinking water has to be stor
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Grammar Girl here. Todays topic is cement versus concrete. Guest writer Sal Glynn writes: Accuracy is important. You might think concrete and cement are interchangeable, but you'll quickly find that you're mistaken when some guy at Home Depot rolls h
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DEVELOPMENT REPORT – January 7, 2002: Storing Drinking Water By Gary Garriott This is the VOA Special English Development Report. Safe drinking water has always been rare and valuable. Throughout th
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WORDS AND THEIR STORIES - Like a Rolling Stone 词汇典故：滚石 Now, the VOA Special English program, WORDS AND THEIR STORIES. 这里是美国之音慢速英语词汇典故。 Today we explain a very old saying that has had a big influence on ro
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轻松幽默 午后小品：Times Are Tough In Rock N'Roll Elizabeth Cook，美国乡村女歌手，她的嗓音在乡村歌手中比较特别，有些沙哑有些不加修饰的的舒服感觉。这首Times Are Tough In Rock N'Roll，歌词有些小讽
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Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele
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