单词：
单词： 相关文章
What Makes Windshield Glass So Tough? We tend to think of glass as fragilebut in fact, glass is pretty strong stuff. A flawless fiber of glass pulled lengthwise is five times stronger than steel! Although glass is quite strong, its also very brittlea
英语听力文摘 English Digest
Very small pieces of plastic, called microfibers, are polluting rivers and oceans. The source of these microfibers may surprise you: your clothes. Clothes worn for outdoor activities and exercise are often made of synthetic material, like polyester o
2017年VOA慢速英语(四)月
Kenya Becomes Latest Country to Ban Plastic Bags Kenya has joined the growing list of countries to ban plastic bags. A new Kenyan law bars the production, sale and even use of polythene plastic bags. People caught breaking the law may be fined up to
2017年VOA慢速英语(九)月
PBX 专用小交换机 PBS 个性化基本服务 PBGA 锡球格状阵列式塑料组装技术 PAGC 全球移动通信系统分机用专用自动小交换机接入 PAD 分组组装拆装，包组装拆装
电信英语
Clothing is so yesterday. I mean, really, what can it do? It cant pick up sound, or beep at us if somethings wrong. Or can it? M.I.T. researchers say theyve developed a fiber that would allow clothing to eventually do those things. Their study is in
Scientific American(七)月
The bridge will be suspended across Zhangjiajie Grand Canyon in scenic Zhangjiajie National Park in central China's Hunan Province. When completed, project engineers say the bridge will be 300 meters above ground and 430 meters in length. The bridge
2015CRI中国国际广播电台