Tourism is a key source of income for Nepal, one of the world's poorest countries.
尼泊尔是全世界最贫穷的国家之一，而旅游业则是该国收入的一项重要来源。
Firstly, insects cannot be part of a vegan diet and are probably the key source of B12 in most primate diets.
首先，昆虫不能成为纯素食的一部分，而昆虫很可能是多数灵长类动物饮食中b 12的主要来源。
Two years age Africa lost more than half its cassava crop — a key source of calories — to the Mosaic virus.
两年前，花叶病毒使非洲损失了超过一半的木薯，而这种作物是当地人的主要食物。
Two years age, Africa lost more than half its cassava crop — a key source of calories — to the Mosaic virus.
两年前，花叶病毒使非洲损失了超过一半的木薯，而这种作物是当地人的主要食物。
Cheyenne's small size may help; fewer cars travel the roads, and vehicles are a key source of PM 2.5 (and ozone).
夏延城市面积小也有帮助；路上来往的车辆更少，机动车是PM2.5的主要来源。
Fish is also the world's most widely traded foodstuff and a key source of export earnings for many poorer countries.
鱼品也是世界上交易最广的食品，而且是许多较贫穷国家出口收入的一个主要来源。
Scientists say they have decoded the entire genetic content of the HIV-1 virus, a key source of Aids infection.
科学家称他们已经解码了整个HIV-1病毒的基因内容，这是一个艾滋病传染的关键因素。
Cows and oxen are primarily used for dairy production and are a key source of draft power in agricultural production.
奶牛和公牛主要用于乳品生产，是农业生产中的主要畜力来源。
Expanding abroad has become a key source of audience growth for Facebook and MySpace, the largest U.S. social network.
海外用户已经成为美国两家最大的SNS网站Facebook和MySpace最主要的用户增长来源。
A key source of conflict among new parents is dividing up-and keeping score of-who does what for the baby and the household.
新父母之间的争吵关键源头被分为—谁为孩子和家庭的日常做过什么—记录在册。
More and more enterprises have taken human resources as the core competitiveness and a key source of competitive advantage.
人力资源被越来越多的企业作为其核心竞争力的关键和竞争优势的源泉。
OBJECTIVE:The epidermis stem cell is a key source of skin occurrence repair reconstruction, but its biology function is still not clear.
表皮干细胞作为皮肤发生修复重建的关键源泉，其生物学作用尚不清楚。
This newsweekly, published as a supplement in Aceh's most-widely read newspaper, has become a key source of information in Aceh on reconstruction.
作为亚齐一家发行量最大的报纸的增刊，这份新闻周刊已经成为亚齐重建的重要信息来源。
Recently, scientist have also discovered comets in the main asteroid belt -these main-belt comets might be a key source of water for the inner terrestrial planets.
最近，科学家在主小行星带中也发现了一些彗星——这些主带彗星可能是类地内行星上水的关键来源。
Silica gel production is high water consumption industry and silica gel wastewater has always been a key source of pollution in the field of industrial production.
硅胶生产属于高耗水行业，硅胶废水也是工业生产领域的一个重要污染源。
Therapists who tend to see “the interpersonal relationship between patient and clinician as a key source of motivation and change are likely to be suspicious, ” he said.
那些倾向于看到“病人与医师之间的人际关系作为动力和变化来源”的治疗者会容易怀疑。
Caption: Mali, 2001. A tree weathers a sandstorm. The Sahara desert is a key source of dust storms, particularly in the area covering Mauritania, Mali, and Algeria.
描述：2001年，马里，一棵挨过了一场沙尘暴的树。撒哈拉沙漠，特别是毛里塔尼亚、马里以及阿尔及利亚地区，是沙尘暴的主要来源。
"Facebook, for example, is a key source of traffic for many smaller social networks, while almost a fifth of people leaving Twitter go on to visit another social network".
比如，facebook就是其他很多较小的社交网站的主要流量来源，而几乎五分之一的离开twitter这家网站的人，会继续去访问另一家社交网站，进而为这家网站带来网络流量。
This paper analyzes the mechanism of noise generation, and indicates that the source of noise generated from a resonating saw blade is the key source for the noise generation.
分析了圆锯片噪声产生的机理，同时指出共振噪声是圆锯片噪声的重要组成部分。
So far this year, more than 95 have started trading on American markets alone, many of these on the New York Stock Exchange, which sees ETF listings as a key source of listings income.
到今年为止，仅仅美国就有超过95支这种基金上市交易，且大部分都是在纽约证券交易所，ETF被视为纽交所上市收入的主要来源。
The peer responds with its own message, the key difference being the source and destination XMPP addresses.
对方用其自己的消息进行响应，关键区别是源和目标XMPP地址。
Then, when rendering a page, you can determine the time that is spent rendering each key area by viewing the HTML source.
然后，在呈现页面时，您可以通过查看html源代码确定呈现每个关键区域所花的时间。
Bananas are high in potassium, a key electrolyte, and a good source of carbohydrates.
香蕉富含钾——一种主要的电解质，而且是碳水化合物的主要来源。
The junction, which is key for normal hearing, may also be the source of auditory hallucinations.
这一区域对于正常听觉十分关键，同时，也是幻听的发源地。
Select entrees with fruits and vegetables as key ingredients, as they are a good source of dietary fiber, as well as of many vitamins and minerals.
选择以水果和蔬菜为主要配料的主菜，因为它们是膳食纤维、多种维生素和矿物质的理想来源。
In some particularly difficult cases, especially network-related problems, this information often plays a key role in tracking down the source.
在某些非常困难的情况下，特别是与网络相关的问题，这些信息常常在跟踪问题来源的任务中扮演重要的角色。
Two key inter-related aspects of returns include the source of the returns and reasons for the returns.
退货来源和退货原因是退货问题的两个互相关联的关键方面。
The heart of the model contains the sca standard specifications, and different extensions have been created to support the key Open Source sca runtimes - Apache Tuscany V1.4 and Frascati V0.5.
该模型的核心包含sca标准说明，并且创建了一些不同的扩展，以支持关键的OpenSource sca运行时—apacheTuscanyV1.4和FrascatiV0.5。
The spatial table has a simple structure: a unique, integer column (objectid), one or more columns making up the primary key (copied from the source table), plus a single point-geometry column.
空间表的结构很简单：一个惟一的整数列(objectid)，组成主键的一个或多个列(从源表复制的)，以及一个点几何列。
The spatial table has a simple structure: a unique, integer column (objectid), one or more columns making up the primary key (copied from the source table), plus a single point-geometry column.
空间表的结构很简单：一个惟一的整数列(objectid)，组成主键的一个或多个列(从源表复制的)，以及一个点几何列。
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