Rarely, animal corona-viruses can evolve and then spread among people, such as Middle East respiratory syndrome and severe acute respiratory syndrome (SARS).

少数情况下，动物冠状病毒会进化并在人群中传播，如中东呼吸综合征和严重急性呼吸综合征（SARS）。

youdao

They were mixed with other organic waste, composted and then spread across the fields.

它们将和其他有机肥混起来，腐熟，再播向田野。

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Most researchers agree that modern humans got their start in Africa and then spread throughout the world beginning about 50,000 years ago.

很多研究者同意现代人类起始于非洲，然后在大约50 000年前扩散到全世界。

youdao

Then spread loose straw ten to fifteen centimeters deep over the seed pieces and between the planted rows.

VOA: special.2009.03.10

If anything happens to me in my livelihood, then it's spread out over everybody and everybody means the whole world.

如果我的生计出问题了，它将分散到每个人身上,每个人指全世界的人。

耶鲁公开课 - 金融市场课程节选

The plant based economies began in the Middle East and then they spread to the rest of the world.

农耕经济由中东地区开始,发展并传播到全世界

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

It rose first on college campuses and then spread to municipal and state governments.

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Officially the majority of the metal went to Spain and then spread across Europe.

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The disturbance began on the ground floor of the grandstand and then spread to the racecourse itself, police said.

BBC: Cardiff and Swansea football fans clash at Newbury race