The atmosphere of feverish excitement was highly infectious; Harry couldn't stop grinning.

这种狂热的兴奋情绪是很有传染性的，哈利也忍不住笑得合不拢嘴。

So when a contagious person, who may not even know they’re infected, comes into contact with others, it can spread like wildfire.

因此，当有传染性的人 甚至还不知道自己被感染的人，与他人接触 它就会像野火样不可收拾。

It spreads through the air and is highly contagious.

它通过空气传播而且有极强的传染性。

It could also require a shift in attitudes towards workers who turn up while sick and potentially infectious, from plaudits for their diligence to scorn for their lack of consideration.

它还可能需要改变对那些在生病和可能有传染性的时候出的员工的态度，从对他们勤奋的赞扬到对他们缺乏考虑的轻蔑。

" If you get one person who shows they want to be social, then the other people catch on. It gets to be contagious, " Lisa said.

“如果些表出他们想要社交的人，那么其他人也会变得想要社交。这是有传染性的。”

If there turns out to be some new infectious pathogen, then we need a group of infectious-disease responders to spring into action.

如果有新的传染性病原体，我们需要群传染病应急人员立即行动起来。

Sirius's delight at having the house full again, and especially at having Harry back, was infectious.

小天狼星的快乐是有传染性的。小天狼星因为家里又住满了人而高兴，哈利的回来尤其让他高兴。

It seems to be something contagious.

好像是有传染性的。

Emotions are contagious, and that means energy is contagious, passion is contagious, conviction is contagious.

情绪是有传染性的，这意味着能量是有传染性的，激情是有传染性的，信念是有传染性的。

Which would you rather suddenly become a contagious infectious?

更愿意突然变成有传染性的感染者吗？

China is currently facing its worst outbreaks since the pandemic started in the city of Wuhan in Thousands of new cases of the highly transmissible Omicron variant are being discovered each day.

中国目前正面临自武汉爆疫情以来最严重的疫情暴，每天都有数千例高传染性的奥密克戎变异株新病例被。

So you start to identify a class of people who are a higher probability of being infectious and you test that group of people.

因此，您开始确定类更有可能具有传染性的人，并对这群人进行测试。