单词：blast-furnace portland cement
单词：blast-furnace portland 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
This is the VOA Special English Agriculture Report. Rice hulls, or husks, are the protective coverings on grains of rice. Rice with just its hull removed is brown rice. Rice without its hull or bran is white rice. Once rice is harvested, the hulls ar
VOA慢速英语2009年（十二）月
DAVID GREENE, HOST: And now, how one family found a way to stay in their neighborhood, even after their rent doubled. They moved into someone's backyard. This is the latest from the NPR Cities Project. UNIDENTIFIED WOMAN #1: I was a part of the commu
2017年NPR美国国家公共电台8月
MARY LOUISE KELLY, HOST: Portlandia begins its eighth and final season tonight on IFC. The sketch comedy TV show put Portland on the map as the capital of earnest urbanism at a time when words like artisanal and locavore were sweeping the nation. It
2018年NPR美国国家公共电台1月
I call this piece Explosion 753. From A for audit to Y for yelling and everything in between, the Mythbusters A to Z of explosions has been a blast. And with just one letter left, you might say that the guys are going to end with a bang. Well if X is
探索与发现2013年
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)