Prevalence is a noun that refers to how common something is, how often it happens.

" prevalence" 是个名词，指某事有多常见，发生的频率有多高。

That's the theory behind Google Flu Trends—which crunches search data to forecast flu prevalence.

这就是谷歌流感趋势背后的理论—通过搜索数据来预测流行趋势。

Surveys indicate the alarming prevalence of these feelings.

调查显示，这些情绪的普遍性令人担忧，甚至可以说几普遍存在。

Dr Bellan plugged the results into a mathematical model that also takes account of HIV's prevalence in a country and how long people there live once they have been infected.

依据艾滋病在个国家的传播程度和染病后人们的寿命时长，贝兰博士利用数学模型将其展现出来。

This is a graph of autism prevalence estimates rising over time.

这是显示自闭症患者数量 普遍性上升的个统计图表。

But the resolution you are considering today notes the prevalence of sexual violence in wars all over the world and states that you are, quote, deeply concerned over the slow progress in eliminating sexual violence in conflict.

但您今天指出全世界战争中的性暴侵犯的普遍存在，并表示了您对消除战争中的性暴进展缓慢的深切忧虑。

By the 1960's however, larger, box-like skyscrapers began to come to prevalence, bringing with them a whole host of wind load engineering challenges.

然而，到了20世纪60年代，更大的、像盒子样的摩天大楼开始盛行，带来了系列的风载工程挑战。

Estimates of its prevalence depend on the diagnostic guidelines.

对其患病率的估计取决于诊断指南。

Its prevalence appears unrelated to any rational assessment of risk.

它的流行似何合理的风险评估无关。

UNICEF says the world has made progress in the past decade in reducing the prevalence of child marriages.

联合国儿童基金会表示，过去十年间，全世界在减少普遍存在的童婚现象方面取得了进展。

In the past, state-level data on the prevalence of abortion were patchy.

过去，关于堕胎率的州级数据参差不齐。

The microbes increasing in prevalence were tolerant of about twenty-three percent alcohol.

越来越普遍的细菌对大约23%酒精耐受。

Despite the prevalence of food delivery, why has this alternative dining concept taken off?

尽管外卖已经盛行，但为什么这种独特的餐饮理念却能流行起来呢？

Endemicity is described as the measure of disease prevalence in a region.

地方性是衡量个地区疾病流行度的标准。

Studying disease prevalence and incidence helps us work out where outbreaks are happening.

研究疾病流行率和发病率有助于我们找出疾病在哪里爆发。

The myopia prevalence among local children and minors is 60 percent.

当地儿童和未成年人近视患病率为 60%。

Due to the higher prevalence of all these health problems, both those who go to sleep late and sleep in, have a greater risk of death.

由于所有这些健康问题导致的高发病率，那些睡得晚和睡懒觉的人都有更大的死亡风险。

There are even a few studies that found no different in symptoms between males and females — or that found that the only differences were the prevalence of anxiety or the frequency of rule-breaking behaviors.

甚至有些研究发现，男性和女性在症状上没有差异，或者发现唯的区别是焦虑的普遍程度或出现违反规则的行为的次数。

The prevalence of depression in China is also high, with more than 95 million Chinese people suffering from the disease, according to a survey on Chinese citizens' mental health that was published in The Lancet in September 2021.

根据2021年9月发表在《柳叶刀》上的项关于中国公民心理健康的调查，抑郁症在中国的患病率也很高，超过9500万中国人患有这种疾病。

Lastly, it's important to recognize that the role of CT in evaluation patients will depend on the severity of infection in that patient, as well as the prevalence of COVID-19 in that community.

此外，能够意识到CT在患者评估中的作用取决于该患者的病重程度以及该社区范围内COVID-19的患病率，这点很重要。