First of all, smiling is contagious.

首先，微笑会传染的。

Among turtles, the tumors are contagious.

这种肿瘤在海龟中会传染的。

They're having fun, and as the audiences' exuberant reactions indicate, the fun is contagious.

他们很开心，正如观众们热洋溢的反应表明的那，会传染的。

I think you have chicken pox! You are contagious! Get away! Don't breathe on me!

我觉得你可能长水痘了！会传染的！走开！不要对着我呼吸！

Yawning is actually a difficult case when it comes to these contagious behaviours.

这些会传染的行为而言，打哈欠实际上一个复杂的例子。

It turns out that math anxiety is contagious.

事实证明， 数学焦虑会传染的。

My greatest fear is that I am going to give it to my parents.

我最担心的，我可能会传染给我的父母。

Well, maybe the prosperity in this place is contagious.

或许这个地方的成功会传染的。

Like mental states, ideas are contagious; much more so when we expose ourselves to people that share the same worldview.

像精神状态一，想法会传染的；当我们接触拥有相同世界观的人时，更如此。

Maybe you've heard that depression is contagious, and you're afraid of catching it.

也许你听说过抑郁症会传染的，你很害怕感染它。

I will hear not those who weep and complain, for their disease is contagious.

我不会听到那些哭泣和抱怨的人，因为他们的疾病会传染的。

" The faculty of deduction is certainly contagious, Watson, " he answered.

“演绎的能力肯定会传染的， 华生，” 他回答道。

You have to take extra precaution now, because this is, I can take this home to my family.

必须要做好防范，因为会传染给我的家人。

Well, watch out. Cooties are contagious.

那你当心点 脑残体会传染的。

And much like yawning, being itchy is thought to be contagious, as some of you may be noticing right about now.

像打哈欠一，发痒被认为会传染的，你们中的一些人现在可能已经注意到了。

This is another term for measles, a contagious virus that's characterized by a skin rash.

Measles麻疹的另一种说法，这一种会引发皮疹的传染性病毒。

He is crying, and the other Marines are watching, and I know that fear is contagious.

他在哭，其他海军陆战队员在看着，我知道恐惧会传染的。

I oughtn't to have come to a man who knows me — your cursed incredulity is infectious.

我不应该来找一个认识我的人——你该死的怀疑会传染的。

Even if I don't fully understand what's happening, the excitement is contagious, and the wine is delightful.

即使我不完全了解正在发生的事，但兴奋会传染的， 而且美酒令人愉悦。

The Hogwarts house-elves had now started edging away from Dobby, as though he was carrying something contagious.

霍格沃茨的家养小精灵们现在已经开始远离多比，仿佛他身上带着什么会传染的东西。