no recorded cases of COVID-19 in marine mammals to date, but both dolphins and beluga  whales (白鲸) have...影响的) to infection from COVID-19. There have been no recorded cases of COVID-19 in marine mammals ……

with unwavering will and confidence while you’re staying at home to prevent the spread of COVID-19? ... will and confidence while you’re staying at home to prevent the spread of COVID-19?        ……

to fight the spread of COVID-19. From wearing masks to closing schools, the world is taking action to fight the spread of COVID-19.  ……

实验性口香糖或可抑制新冠病毒传播。实验性口香糖或可抑制新冠病毒传播。Can a chewing gum reduce COVID-19 spread? Researchers... reduce COVID-19 spread? Researchers at the University of Pennsylvania in the US believe it can ……

will be used to refer to COVID-19 variants (变种).The naming scheme (方案) will be used to label noteworthy..., also known as B.1.617.2.According to the WHO, the scientific names of the COVID-19 variants ……

If people around you have had a fever recently, it may not be COVID-19. According to China Daily... not be COVID-19. According to China Daily, many places in China have entered into the peak (高峰) period ……

If people around you have had a fever recently, it may not be COVID-19. According to China Daily... things to prevent COVID-19 from spreading, which also prevented the spreading of flu. Thus, people ……

the spread of COVID-19 have resulted in the planet becoming less noisy, which comes as good news for seismologists.The lockdown policies around the world to prevent the spread of COVID-19 have resulted ……

the spread of COVID-19 have resulted in the planet becoming less noisy, which comes as good news for seismologists.The lockdown policies around the world to prevent the spread of COVID-19 have resulted ……

信不信由你
Bats (蝙蝠) can fly. Are they birds? No, they are mammals (哺乳动物). ……

to the rapid spread of COVID-19 and its impact on health services. It was in place until Feb 26 as case... 8, 2021, due to the rapid spread of COVID-19 and its impact on health services. It was in place ……

vaccines help?Can vaccines help?Vaccination (打疫苗) is an effective way to help stop the spread of COVID-19... of Health. Vaccination (打疫苗) is an effective way to help stop the spread of COVID-19. The Covaxin ……

-19 pandemic continues to spread around the world. The newly found COVID-19 variant (变种), Omicron... to spread around the world. The newly found COVID-19 variant (变种), Omicron, is causing new concerns ……

severe cases, COVID-19 can cause pneumonia (肺炎), kidney failure (肾衰竭) and death.Infected people will have a fever, cough and breathing difficulties. In more severe cases, COVID-19 can cause pneumonia ……

difficulties. In more severe cases, COVID-19 can cause pneumonia (肺炎), kidney failure (肾衰竭) and death.Infected people will have a fever, cough and breathing difficulties. In more severe cases, COVID-19 can ……