BBC英语教学网 - BBC Learning English
一个让你免费在线学习BBC英语的好地方! 无须报名, 不收学费, 全年无休, 保证提高! (^_^)
月球是由许多层状结构组成的，包括它厚厚的外壳，但你有没有想过月球最外层的 “月壳” 是怎样形成的？人们以前认为月球的岩石外层是由其表面深处的岩浆或熔融岩石形成的。 The scientists re-analysed a sample collected by NASA astronauts during the 1972 Apollo mission. What they found suggests large portions of the crust were formed at temperatures…
一项调查发现，如果不采取紧急行动，到2050年，考拉将在澳大利亚新南威尔士州灭绝。去年，据澳大利亚考拉基金会（Australian Koala Foundation）的估算，澳大利亚仅剩下不到8万只考拉。 The future of the koala and what is an important home is at stake. Cate Faehrmann, the chair of the Parliamentary Committee, warned future generations may not…
研究人员们发起了一项行动，这项行动追踪野生动物在新冠肺炎疫情封锁开始之前、期间及之后的生存状况。这个由英国领头的研究小组主要是为了研究所谓的 “人类活动暂停”（anthropause）现象，即全球范围内人类活动暂时减缓的现象。“人类活动暂停” 可能给其它物种带来深远的影响。 It’s been for tragic, costly reasons, but we’ve pushed the pause button on human activity all over the world. And on an increasingly crowded planet, wildlife scientists…
日本的研究人员已经成功地利用肥皂泡薄膜中携带的花粉为梨树授粉。由于全世界蜜蜂数量的减少，科学家们一直在寻找给作物授粉的替代方法。 Beloved by children and many adults, soap bubbles would hardly seem to be the most robust vehicle for pollinating fruit and vegetables. But Japanese researchers have found that these…
根据卫星数据显示的信息，古老的、富含碳的热带森林继续以惊人的速度消失。美国马里兰大学对高度为五米以上的树木的研究称，在2019年，每六秒就有一片足球场大小的原始森林消失。 For scientists, the loss of older trees and tropical rainforests is a double blow to life on Earth. As well as storing massive amounts of carbon, they’re hotspots of…
就增长速度而言，视频会议软件公司 Zoom 的表现名不虚传。新冠疫情迫使数百万人通过远程通讯软件工作、学习，或与家人朋友 “隔空” 见面，四月份该公司软件的使用量猛增了30倍。 The Coronavirus pandemic has unleashed incredible growth for Zoom. The popular video conferencing app, which is now worth around $50 billion, said sales grew by…
一项新的研究显示，现代人类到达欧洲并把尼安德特人逐渐推到灭绝边缘的时间比之前认为得更早。对保加利亚北部一处洞穴遗迹进行的一系列测试表明，早在4.6万年前那里就有智人存在。 Modern humans are prime suspects in the extinction of the Neanderthals – the ancient species that disappeared from Europe almost as soon as our ancestors arrived. 现代人类是导致尼安德特人灭绝的主要嫌疑犯，尼安德特人是原始人类文明的物种，他们在我们的祖先刚到达欧洲后就消失了。 It’s unclear…
一份报告称，气候变化问题尚可应对，但前提是人们愿意接受生活方式上的重大改变。报告的作者们列出了一系列减少碳足迹的最佳方法。 The study’s authors say governments are mainly focused on economic growth when their primary responsibility should be ensuring a stable climate on Earth. They urge the public to contribute…
新的研究显示，飞蛾在夜间作为多种花卉及植物的传粉者起着至关重要的作用。飞蛾的运输网络比蜜蜂等日间传粉的昆虫更大、更复杂。 Long seen as fluttering pests that make holes in your clothes, scientists now say we have badly misjudged the humble moth. While bees are widely recognised for their role…
欧洲的科学家们认为他们现在能有把握地描述出是什么导致了地球北磁极的漂移。近年来，地球北磁极已从加拿大移向西伯利亚。 At the top of the world, there is a place where magnetic field lines point vertically into the Earth’s surface. It’s called the North Magnetic Pole and it wanders…
专家们称，随着人们逐渐向数字支付过渡，新冠肺炎疫情将加速推进现金使用的衰落。英国的封锁政策已导致使用自动取款机取款的次数下降了60%，尽管人们提款的总额有所增加。 The dramatic drop in cash withdrawals is the obvious result of more people having to do their shopping online. When they do venture out, many are suspicious of handling…
要想找到英国南极探险家欧内斯特·沙克尔顿（Ernest Shackleton）曾经带领的标志性船只，需要付出巨大的努力。 这是去年试图寻找 “持久号” 探险船未果的科学家们得出的结论，“持久号” 于1915年沉入了威德尔海三千米深的海底。 It was an extraordinary adventure - Ernest Shackleton and his men trapped in sea ice for months on end before eventually abandoning their crashed…
研究人员表示，一种致命病原体对欧洲橄榄树的侵害所造成的经济损失可达200多亿欧元。研究人员模拟了这种名叫叶缘焦枯病菌（Xylella fastidiosa）的病原体未来的最坏影响，这种病原体已经杀死了意大利的大片树木。 Xylella is considered to be one of the most dangerous pathogens for plants anywhere in the world. Transmitted by sap-sucking insects, the bacterium has caused Italy’s olive production…
冷战期间进行的原子弹试验数据帮助科学家们准确地测定了世界上最大鱼类的年龄。鲸鲨是体型庞大、行动速度缓慢、性情温和的生物，主要栖息在热带水域中。 Stretching up to 60 feet in length and weighing around 20 tonnes, the slow-moving whale shark is very popular with divers. But despite their docile nature, scientists still lack…
科学家们说，有一种新型血液检查常在患者表现出任何征兆或症状前就能检测出50多种癌症。专家们希望，当肿瘤仍处于易被医治或能被完全治愈的阶段时，这项检查可帮助医生们提前诊断出肿瘤的存在。 Doctors already have ways to screen for cancer, but a single blood test that could check for lots of different tumours simultaneously would be revolutionary. That’s what researchers from…