en-us	The coronavirus at the center of the current pandemic, SARS-CoV-2, is spreading like wildfire.  
zh-cn	当前，新冠肺炎疫情正像野火一样蔓延着。 

en-us	Just four months after it was first detected, it has spread to over 180 countries, infecting more than 1 million people. 
zh-cn	从首次发现确诊病例至今，四个月以来，它已经蔓延到180多个国家，感染了100多万人。 

en-us	At this moment, at least 20 vaccines are in development around the globe.  
zh-cn	目前，全球至少有20种疫苗正在研发当中。 

en-us	But there is still so much we don't know about the virus – how it spreads, how it affects its victims.  
zh-cn	但我们对这种病毒仍然缺乏了解，比如它的传播途径，以及它会给被感染人群带来的影响。 

en-us	The following cases shed light on why we should remain cautious about this slowly unraveling mystery. 
zh-cn	下面的这些案例就阐明了为什么我们对这些逐步解开的谜团仍需保持谨慎。  

en-us	A 4-year-old female Malayan tiger tested positive for coronavirus after developing a dry cough at the Bronx Zoo in New York City.  
zh-cn	在纽约市布朗克斯动物园，一只4岁的雌性马来亚虎出现了干咳症状， 

en-us	Samples were taken and tested after the tiger and five other big cats at the zoo began showing symptoms of respiratory illness.  
zh-cn	不仅这只老虎，还有其他五只大型猫科动物也都出现了呼吸道感染症状， 

en-us	This is the first case of a wild animal contracting the disease from a person.  
zh-cn	这是第一起野生动物被人类感染的病例。 

en-us	The Zoo said: "It is not known how this disease will develop in big cats since different species can react differently to novel infections." 
zh-cn	动物园表示：目前还不清楚这种病毒将如何在大型猫科动物中发展，因为不同的物种对该病毒可能会有不同的反应。 

en-us	Shocking, but not completely surprising; it turns out that SARS-CoV-2 can hijack animal cells, too. 
zh-cn	这似乎令人震惊，但并不完全出乎意料。事实证明新型冠状病毒也能入侵动物细胞。 

en-us	Not only is there uncertainty about who can be infected, but how they're infected. We're still learning about transmission. 
zh-cn	不仅感染人群具有不确定性，我们对于病毒的传播途径也尚未完全掌握。 

en-us	Just days ago in Wuhan, the epicenter of the pandemic, a new confirmed case sparked an intense debate online.  
zh-cn	就在几天前，在曾经的疫情中心武汉，一例新的确诊病例的出现，在网上引发了激烈争论。 

en-us	An asymptomatic patient was unaware how he contracted the disease.  
zh-cn	一名无症状患者不知道自己是如何感染新冠肺炎的， 

en-us	He acknowledged picking up packages without wearing gloves or washing his hands afterward which stirred a panic as residents thought of the numerous packages we pick up every day,  
zh-cn	他自称多次没戴手套领取快递，随后也没有立即洗手。这样的说法引起了人们的恐慌，因为很多人联想到自己也每天取无数个快递， 

en-us	especially with many stores closed and a heavy reliance on deliveries.  
zh-cn	特别是在目前大量商店关门、人们不得不依赖快递的情况下。 

en-us	The patient clarified that he also went shopping, fixed his car and picked up multiple deliveries.  
zh-cn	这位被感染者后来表示，他还曾外出购物、修理车辆、多次领取快递。 

en-us	But he still had no idea how he got infected, like what he said: "How did I get it? It's like a mystery."
zh-cn	他也纳闷自己是如何感染的：“我是怎么感染的？像个谜一样。” 

en-us	"Silent carriers," or asymptomatic patients, are those who were infected with the novel coronavirus but have shown delayed symptoms or none at all.  
zh-cn	“沉默携带者”，即无症状患者，是指那些感染了新冠病毒，但症状延迟表现或根本没有症状的人。 

en-us	However, these cases can cause sporadic clusters of infections.  
zh-cn	然而，这些病例很可能引起广泛的聚集性感染。 

en-us	The first confirmation that COVID-19 could be transmitted by asymptomatic people came in February,  
zh-cn	首次证实新冠肺炎可能经由无症状患者传播是在2月份， 

en-us	when a case study described a 20-year-old woman from Wuhan who passed the coronavirus to five family members but never got physically sick herself.  
zh-cn	当时一项病例研究描述了一名来自武汉的20岁女性，她将新冠病毒传染给了五名家庭成员，但她自己却从未出现任何症状。 

en-us	This raised people's eyebrows and accelerated checkups, especially in Wuhan,  
zh-cn	这个案例引起了人们的高度关注，也加速了病毒检测的进度，尤其在武汉地区。 

en-us	where, according to one respiratory expert, there were an estimated 10,000 to 20,000 asymptomatic cases.  
zh-cn	一位呼吸道疾病专家说，武汉大约有一两万的无症状感染者。 

en-us	It's now dawning on people... maybe we don't know as much as we thought about this new virus.  
zh-cn	现在人们不得不再次考量，也许我们对这种新病毒的了解并没有我们所想的那么全面， 

en-us	Or, in the words of China's top medical scientist, "We are not being imaginative enough about the novel coronavirus." 
zh-cn	或者用中国顶尖医学专家的话来说，“大家对新冠病毒缺乏想象力”。

en-us	Epidemiologists are still trying to figure out which species can harbor the virus to gain a better understanding about where it may persist in the world and how likely it is to jump back to humans in the future. 
zh-cn	流行病学家仍在试图找出可能携带这种病毒的物种，以更好地了解这种病毒可能在世界哪些角落存在，以及它未来再次扑向人类的可能性有多大。 

en-us	Since COVID-19 still holds so many unanswered questions, we might as well give up on panicking and instead remain cautious.
zh-cn	鉴于新冠肺炎仍有许多亟待解决的问题，我们要避免不必要的恐慌，保持谨慎。