单词：straight-run asphalt cement
单词：straight-run asphalt cement 相关文章
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
英语语法 Grammar Girl
EXPLORATIONS - A Sticky Black Hole of Ancient Death, Right in the Middle of Los AngelesBy Paul Thompson Broadcast: Wednesday, April 26, 2006 (MUSIC) VOICE ONE: This is Faith Lapidus. VOICE TWO: And th
2006年慢速英语（四）月
VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember with EXPLORATIONS in VOA Special English. Today we tell about an unusual scientific research area in the United States. It is filled with the remains of ancient animals. This unusual pl
VOA慢速英语2007年（十）月
By Phuong Tran Praia, Cape Verde 09 June 2007 Off the coast of West Africa, transport officials in the island nation of Cape Verde have begun a road improvement program. They say colonial-era cobblestone roads do not make much sense anymore, and are,
2007年VOA标准英语（六月）
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
VOA标准英语2010年(一月)
There was a time in my life when beauty meant something special to me. I guess that would have been when I was about six or seven years old, just several weeks or maybe a month before the orphanage turned me into an old man. I would get up every morn
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