7.5热门音频：巴西队高颜值门将走红

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Brazil goalkeeper goes viral

巴西队高颜值门将走红

Brazilian World Cup team's "gorgeous" goalkeeper Alisson Becker goes viral as Twitter obsesses over the hunky 25-year-old and his remarkable similarities to “Thor” actor Chris Hemsworth. The goalkeeper sparked interest among fans on Twitter during the intense World Cup game against Mexico where Alisson showed off his goalkeeping skills by preventing the opposing team from scoring during the entirety of the game.

本届世界杯巴西队门将艾力森•贝克尔火了，推特上的一众网友为其神魂颠倒，因为这位现年25岁的帅哥不仅面容俊朗，竟然还与"雷神"扮演者克里斯•海姆斯沃斯撞脸。巴西对阵墨西哥的比赛紧张激烈，比赛期间推特上的球迷都在讨论艾力森。这位门将充分展现了他的守门技术，阻挡了对方球队整场比赛的进攻。

"Planned on rooting for Mexico but holy smokes have you seen the Brazilian goalkeeper? Hot damn," a Twitter user said. "No wonder Mexico couldn't score, Brazil played with Thor as their goalkeeper," said another user. 

有推特网友说："本来打算支持墨西哥队，但是我的妈呀，你们看见巴西队的门将了吗？太性感了！"还有人说："难怪墨西哥队不进球，巴西队用雷神当守门员。"

Pentagon reinvents wheel

美军研发出可变形车轮

The Pentagon has developed a shape-shifting wheel to make life easier for troops travelling over difficult terrain. 

近日，五角大楼开发出一款可变形车轮使部队在险要地形上更容易行进。

A military truck in which the driver can switch the wheels to a more triangular shape and back again has been demonstrated by the defense advanced research projects agency. 

国防部高级研究计划局展示了一辆军用卡车，驾驶员可以在车里调整车轮，将其变得更像三角形，然后再变回来。

The shape-shifting rear wheels give the vehicle track-like grip on soft or slippery terrain, but can be converted back to a more traditional round shape in two seconds for harder surfaces. 

可变形的后轮让车辆可以抓住较软的或者光滑的地面，但一旦驶向较硬的地面，它可以在两秒内变回到更加传统的圆形。

The idea is part of a program called ground x-vehicle technologies that aims to replace the aging Humvee with a lighter, faster vehicle that can adapt to 95% of terrains.

该创意是"陆地X车辆技术"项目的一部分，这个项目旨在将老旧的军用悍马替换成更轻、速度更快且能适应95%的地形的车辆。

Wrong way to wash hands

研究:多数人未正确洗手

Hand-washing seems pretty simple, but a recent study shows that 97% of the time, we're still doing it wrong - which can lead to contamination of food and surfaces and result in foodborne illness. 

洗手看似简单，但近期的一项研究显示，97%的状况下，我们洗手的方法都是错的。这会导致食物和表面受到污染，进而让人们患上食物传染疾病。

The study from the US Department of Agriculture shows most consumers failed to wash their hands and rub with soap for 20 seconds. That's the amount of time recommended by the Centers for Disease Control and Prevention, which says that washing for shorter periods means fewer germs are removed. 

美国农业部的研究显示，大多数消费者洗手和用肥皂揉搓的时间不够20秒。这是美国疾病防治中心建议的洗手时长。该机构表示，洗手时间越短，清洗掉的细菌越少。

"Numerous" study participants also didn't dry their hands with a clean towel. A study done in 2013 by Michigan State University found only 5% of people washed their hands correctly.

研究还发现很多参与者没有用干净的毛巾擦干双手。密歇根州立大学2013年开展的一项研究发现，只有5%的人会正确洗手。

Gates gives to malaria fight

盖茨投资培育'杀手蚊'

Microsoft founder Bill Gates is pouring $4 million into a project to create killer mosquitoes that destroy each other through sex. 

微软创始人比尔•盖茨将斥资400万美元，培育能够在交配中杀死对方的"杀手蚊"。

It's a bold bid to curb malaria, a deadly disease typically transmitted through the bite of infected mosquitoes. 

这是控制疟疾的一项大胆尝试。疟疾是一种致命疾病，通常通过受感染蚊虫的叮咬进行传播。

Tech mogul Gates will use funds from his own charity organization – the Bill and Melinda Gates Foundation – to eradicate malaria "within a generation."

科技巨头盖茨将利用其慈善机构比尔和梅琳达•盖茨基金会的资金，在"一代"之内根除疟疾。

The plan is to create genetically modified male mosquitoes that mate with their female counterparts in the wild. 

该计划将培育出转基因雄蚊，这些雄蚊将会在自然条件下和雌蚊交配。

Only female mosquitoes bite, so Gates' army of gene-engineered male mosquitoes would be safe to humans. What's important is that these male mosquitoes contain a self-limiting gene that gets passed onto female mates. 

只有雌蚊会叮咬人类，所以该项目培育的众多转基因雄蚊不会危及人类。重要的是，这些雄蚊有一种自限基因，能够传播到雌蚊体内。

When the females give birth, their offspring will die before adulthood thanks to the gene.

雌蚊产卵时，她们的后代将会因为携带这种基因而夭折。