A study of a solar-powered blood pressure monitor finds it can be an effective tool in places where electricity and even batteries can be in short supply. A study in Africa found the monitors to be affordable and accurate. 对太阳能血压计的研究

发表于:2018-12-19 / 阅读(55) / 评论(0) 分类 VOA双语新闻 2010年11月

But with both parents out searching for food, the nest is left unguarded and exposed. Triceratops may be a plant eater, but with a defenseless baby T. Rex around, it'll make an exception. Quetzalcoatlus is the largest flying carnivore in Earth's hist

发表于:2019-01-23 / 阅读(60) / 评论(0) 分类 探索与发现2013年

今天我们要学的词是pinpoint。 Pinpoint, 准确地指出。 The firefighters haven't been able to pinpoint the cause of the fire, 消防队员还没找到火灾的起因。After the game, the coach pinpointed a couple of areas for the team to

发表于:2019-01-26 / 阅读(70) / 评论(0) 分类 英语单词荟萃

How Full Is That Glass? 杯有多满? How does the shape of a glass affect how much you drink? A scientist set out to examine just this, and the results are rather astounding . Whatever the age of the subjects, they consistently poured more juice i

发表于:2019-01-26 / 阅读(60) / 评论(0) 分类 英语听力文摘 English Digest

SPEAKING English fluently and accurately is a goal of many people studying English in China. Fluency can be simply defined asbeing able to communicate ideas without having to stop and think too much about what one is saying; speaking accurately means

发表于:2019-01-31 / 阅读(67) / 评论(0) 分类 英语杂谈