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

发表于:2019-01-02 / 阅读(82) / 评论(0) 分类 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

发表于:2019-01-11 / 阅读(146) / 评论(0) 分类 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

发表于:2019-01-16 / 阅读(25) / 评论(0) 分类 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

发表于:2019-01-16 / 阅读(54) / 评论(0) 分类 2018年NPR美国国家公共电台1月

JUDY WOODRUFF: Next: the possibilities of getting more energy through water. Humans have long harnessed the power of water to perform work. In modern time, hydroelectricity, generated by the power of water flowing through turbines at the base of dams

发表于:2019-01-27 / 阅读(78) / 评论(0) 分类 PBS访谈环境系列

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

发表于:2019-02-08 / 阅读(89) / 评论(0) 分类 VOA标准英语2010年(一月)