In order to slow the spread of COVID-19, we're advised to avoid physical contact as much as possible.

为了减少新冠病毒的传播，我们得到的建议是尽可能避免身体接触。

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In order for plants to reproduce, they have to spread their seeds to other areas.

为了繁殖，植物必须将种子传播到其他地区。

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It is reported that many hospitals abroad refuse all visitors to patients in order to stop the spread of COVID-19. Patients feel lonely and worried, so some hospitals have created "Online Wish Wall" for the public.

据报道，国外很多医院为了阻止新冠肺炎的传播，拒绝对所有患者的探视。病人为此感到孤独担忧，因而一些医院为公众创建了“网上许愿墙”。

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As we'll see in section today, a vaccine does not have to be totally perfect in order to prevent transmission of a disease, because when a disease enters a community its spread from one person to another.

有如我们今天看到的,疫苗不一定非要,绝对完美地阻止疾病的传播,因为当疾病侵入一个社区后,会在人群间传播

耶鲁公开课 - 生物医学工程探索课程节选

In 1991, according to Ceri Peach, an Oxford University geographer, 60% of Pakistanis and 70% of Bangladeshis would have to move in order to spread themselves evenly across the city's wards.

ECONOMIST: Segregation

Problems tend to spread virally in short order.

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The commonly used index of segregation, which measures the number of people who would have to move in order to spread themselves evenly over a city, shows that every large ethnic minority group became less segregated between 1991 and 2001.

ECONOMIST: Race