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1·Scarlet fever is highly contagious.

猩红热的接触传染性很强。《牛津词典》

2·Laughing is contagious.

笑是有感染力的。《柯林斯英汉双解大词典》

3·This disease is not contagious [infectious].

这病不传染。《新英汉大辞典》

4·The pleasure of connection seems contagious.

联系的乐趣似乎具有感染力。

5·The cute but clumsy pink piglet, McDull, just might be the most contagious thing this summer.

可爱却又笨拙的粉红小猪麦兜大概是今夏最具感染力的角色了。

6·The reality is, taking one's phone out at the wrong time is worse than belching because, unlike other minor offense, checking tech is contagious.

事实是，在错误的时间拿出手机比打嗝更糟糕，因为这不像其他小过错，查看科技产品是会传染的。

7·Like the flu, a person's emotional state can be contagious.

就像流感一样，一个人的情绪状态是可以传染的。

8·Loving your body is contagious.

爱你的身体是会有感染性的。

9·And that love is contagious.

爱是富于感染力的。

10·Smile — it really is contagious!

微笑- - -微笑真的是会传染的。

传染性的

1·There is still some way to go in the fight against one of the world’s most contagious diseases.

在防治这个世界最具传染性的疾病之一方面还有一段路要走。

2·They are highly contagious; the virus causes the body to produce symptoms which ensure the spread of the contagion.

它们都具有很高的传染性；并且可以使人体产生各种症状，从而确保其传染性的传播。

3·We have been told that the financial crisis is so severe and so contagious because it comes at a time of unprecedented interconnectedness.

我们得知这次金融危机那么严重，传染性那么强，是因为发生在具有史无前例的相互关联性的时代。

4·We have made this mess, and mistakes today are highly contagious.

我们造成了混乱，而今天的错误具有高度传染性。

5·These days, the consequences of an adverse event in one part of the world are highly contagious and profoundly unfair.

如今，发生在世界一角的不良事件的后果具有高度的传染性和极度的不公平性。

有感染力

1·Laughing is contagious.

笑是有感染力的。《柯林斯英汉双解大词典》

2·Love, happiness and tranquility are all contagious.

爱、幸福与宁静都是有感染力的。

3·The energy that people emit when they are excited about living is contagious and very attractive.

当人们对生活感到兴奋的时候产生的能量是有感染力和吸引力的。

4·Their joy, confidence, and enthusiasm are contagious because they know they're making a difference.

他们的喜乐、信心和热情是有感染力的，因为他们知道他们正在改变世界。

5·She kept on laughing, didn't stop, and it was contagious.

她不住地笑，没有停下来，笑声很有感染力。

感染性的

1·Attitude is contagious and it will help to motivate you, and even those around you, to drive you towards your goal.

态度是具有感染性的，它可以使你获得动力，甚至可以感染你周围的人，推动你向目标努力。

2·As I said, success is contagious.

如我所述，成功具有感染性。

3·Laughter could be viewed as a form of involuntary noisemaking and it's contagious.

我们可以把笑声视为不由自主地发出的声音,然后笑声有感染性。

4·That kind of drive is contagious.

这种内在的动力往往具有极强的感染性。

5·The answer is simple: I believe in contagious optimism.

答案很简单：我相信感染性的乐观主义。

会蔓延的

1·Having sequenced the new strain's genes, the researchers recreated it in a laboratory and exposed it to pigs. The strain proved contagious but only mildly virulent.

按顺序排好新菌株的基因，研究人员在实验室中重新构建了它，并把它与猪相接触。证明了该菌株会蔓延的，但只有轻微的毒性。

2·The strain proved contagious but only mildly virulent.

证明了该菌株会蔓延的，但只有轻微的毒性。

3·Fear is contagious. It paralyzes.

恐惧是会蔓延的，它会麻痹人们。

富有感染力的

1·You have to make it contagious.

你定要使之富有感染力。

2·I may get more and more mature, further and further away from innocence in future, but I hope I can always keep my contagious laughter, bubbly personality and my happy nature for my whole life.

或许以后我会越来越成熟，越来越远离单纯，可是我希望能一辈子保持自己富有感染力的笑声、活泼的个性以及快乐的本性。

3·It was contagious and soon we were literally 27 slumped down on the floor in hysterics.

这笑声富有感染力，很快我们就笑倒在地板上，样子有些歇斯底里。

会感染的

1·Happiness is contagious. If you are happy, and work on your happiness, you are contributing indirectly to other people's happiness.

快乐是会感染的。如果你快乐并专注于快乐，你就是间接地为对其他人的快乐做贡献。

(1)contagious disease接触传染病