Two kids wear bubble helmets on a playground. ICTwo kids wear bubble helmets on a playground. IC泡泡头盔帮助预防感染新冠病毒。The kids in this picture look like astronauts! They are wearing bubble helmets (气泡 ……

astronauts! They are wearing bubble helmets (气泡头盔). A group of engineers (工程师) in Colombia made... as a basketball. It has a filter (过滤器) and can keep viruses out. Students like to wear the helmets at school ……

viruses (病毒) out. Students like to wear the helmets to school. They look cool.  This kid looks...科技感十足的气泡头盔科技感十足的气泡头盔  This kid looks like an astronaut (宇航员). He is wearing a bubble ……

. Now Beijing kids have their own security guards. All the guards wear the same uniforms and helmets... 2,000 school security guards in Beijing to protect (保护) students. ……

最长的泡泡串Look at this amazing bubble chain (链子)! Stefano Righi from Italy made it with washing water. Stefano is a bubble artist. The bubble chain has 40 small bubbles. It is the longest bubble chain ……

a firewall. These protect the computer from attacks by hackers.Then it's time to think about computer...WASHINGTON — Considering the serious warnings lately about Internet viruses, users may be tempted ……

attack human cellsB. they frequently change the form of hemagglutininC. they protect the virus from... on all types of flu viruses.D. Flu viruses might adapt to the new type of vaccine in future. ……

specialist from the US. One way is to use the components (成分) of viruses to cure diseases... different viruses in the infant gut (婴儿的肠道) shortly after birth, suggesting that they probably come from ……

outside China. At one time, Chinese blue helmets were protecting kids and taking care of the sick... from thePeople's Liberation Army(PLA,人民解放军) went toLiberia(利比里亚) in Africa. They will joinUnited ……

to National Health and Family Planning Commission.Here are some tips from the WHO that can protect you.... But be careful – the warm weather is also a hotbed for viruses (病毒) and disease. This March, the influenza ……

that the answer is in our noses.Viruses (病毒) can go inside our body through the nose. To protect us, our noses...). Viruses (病毒) can go inside our body through the nose. To protect us, our noses create many cells ……

好大的泡泡！Samsam Bubbleman is a bubble maker. He is from the UK. Last month he made a bubble of 23.1 cubic meters (立方米). It is the largest free-floating (自由浮动的) bubble in the world. ……

into a course about viruses."The university has taken several precautions to prevent students from abusing...A COURSE in Canada will teach university students how to create and write computer viruses and bugs ……

? Scientists say it probably came from bats.Bats can carry and transmit (传播) more than 60 viruses... ecological balance. The lesson we can learn from disease outbreaks is to respect and protect animals ……

? Scientists say it probably came from bats.Bats can carry and transmit (传播) more than 60 viruses... ecological balance. The lesson we can learn from disease outbreaks is to respect and protect animals ……