Tourism is a major source of income for the area.
旅游业是这个地区的主要收入来源。
The professionalization of politics is a major source of our ills.
政治职业化是导致我们这些弊端的一个主要原因。
According to a recent survey, employees who have a job reliant on IT support consider IT a major source of job dissatisfaction.
根据最近的一项调查，工作依赖于信息技术支持的员工认为信息技术是工作不满度的主要来源。
For example, when the board of the University of Colorado searched for a new president, it wanted a leader familiar with the state government, a major source of the university's budget.
例如，当科罗拉多大学董事会在物色一位新校长时，想要的是一位熟悉州政府事务的领导，因为州政府是该校预算的主要来源。
Fish was a major source of protein for the working man.
鱼曾是劳动者获取蛋白质的主要来源。
Livestock are also a major source of greenhouse gases.
家畜还是主要的温室气体排放源。
It is also a major source of land and water degradation.
它还是土地和水资源退化的一大根源。
In urban areas motor vehicles are a major source of PAHs.
在城市地区机动车辆是多环芳烃的主要来源。
Slow starts in the morning are a major source of wasted time.
清晨慢节奏的开始是时间浪费的主要来源。
China's widening trade surplus has been a major source of excess liquidity.
中国日益扩大的贸易顺差一直是流动性过剩的主要原因。
The body reacts in this way because it sees sleep loss as a major source of stress.
身体以这种方式回应是因为他认为睡眠不足是压力的主要来源。
The function printf (3) and related functions can be a major source of problems.
函数printf(3)及其相关函数都可能成为问题的根源。
Free radicals are molecules that destroy body cells. A major source is thought to be sugar.
自由基是一种能破坏身体细胞的分子物质，其最主要的来源就是糖。
Small breaks help to prevent your mind and body from becoming fatigued, a major source of stress.
短时间的休息能防止你身心俱疲，这也是压力的重要来源。
The Ogallala aquifer is a major source of drinking and irrigation water for America's central plains.
奥加拉拉蓄水层是美国中部平原饮用和灌溉用水的主要来源。
Tomatoes are a major source of lycopene, a potent antioxidant also thought to protect against sunburn.
西红柿是番茄红素的主要来源，那是一种有效的抗氧化成份同时也被认为可以防止皮肤晒伤。
You should pay careful attention to this detail, because it's a major source of potential problems!
应当注意这个细节，因为它会造成潜在的问题！
Doctors trained in internal medicine have historically been seen as a major source of frontline primary care.
内科医学培训的医生一直被视为一线初级保健医生的主要来源。
Dust is a major source of iron, which is vital for plankton and other organisms that draw carbon out of the atmosphere.
灰尘是铁的主要来源。而铁对于浮游生物和有机物来释放二氧化碳是至关重要的。
In fact, a poll by Time Magazine found that helping others was a major source of happiness for 75 percent of Americans.
事实上，《时代》杂志民意调查发现，对于75%的美国人来说，帮助别人是快乐的主要来源。
A: For billions of people in the world, fish is a major source of reliable protein and an essential part of their diets.
答：对于世界上几十亿人口来说，鱼是一种主要的蛋白质来源，也是食物中的重要一环。
They are a major source of food for people in all countries and there is significant international trade in these products.
在所有国家，蛋及其制品是人们的主要食物来源，其国际贸易量很大。
The tourism industry can be a major source of revenue for a country and in some cases, it can even be its main source or revenue.
对一个国家而言，旅游业可能是重要收入来源，有些情形下，它甚至是主收入来源。
The experts said beer was a major source of dietary silicon – roughly half of the silicon in beer can be readily absorbed by the body.
专家称啤酒是膳食中硅元素的主要来源——人体大概能够吸收啤酒中硅元素含量的二分之一。
Braun notes that for people who handle only a couple of receipts a day, thermal paper is unlikely to be a major source of exposure.
布劳恩强调人们一天顶多接触很少几张打印凭据，热敏纸不可能是接触双酚A的主要来源。
Repeat customers were a major source of business for retail travel agents with two-thirds of total enquiries coming from existing clients.
——回头客是旅游零售代理商主要的客源，有三分之二的咨询是来自于现有客户。
Studies of traffic congestion in New York and Los Angeles have found that cruising for parking is, in fact, a major source of gridlock.
对纽约和洛杉矶两地交通状况的研究表明，寻找泊车位的车辆是造成交通堵塞的主要原因。
As well as the noise, traffic, loss of arable land and threat to birds, airports are a major source of pollution and greenhouse gas emissions.
机场不仅导致了噪声、交通堵塞、耕地流失，威胁鸟类，还是主要的污染源和温室气体排放源。
As well as the noise, traffic, loss of arable land and threat to birds, airports are a major source of pollution and greenhouse gas emissions.
机场不仅导致了噪声、交通堵塞、耕地流失，威胁鸟类，还是主要的污染源和温室气体排放源。
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