1.When agriculture becomes the chief source of sustenance , the community is still small but assumes a more permanent character.
农业成为主要生存方式以后，社区依然很小，但具有了更经久的性质。
2.The Jordan River is the chief source of the incoming water, but since the 1960s much of its water has been perted for irrigation.
约旦河是进水的主要来源，但自从60年代，大部分的水已被改用于灌溉。
3.Eastern goods were in great demand in Europe, and Venice, being the chief source of supply, could charge high prices.
因为东方商品在欧洲需求量很大，所以作为这些商品的主要供应地，威尼斯可以从中牟取暴利。
4.and Federal Express identified computerized monitoring or surveillance as the chief source of stress in the workplace.
联邦快速公司的职员们也证实，电脑监视器是在工作地点引起压力的主要来源。
5.People regard the sun as the chief source of heat and light.
人们认为太阳是主要的热源和光源。
6.Blogs were considered the "coolest" modern communication medium, but magazines remained popular and the chief source of fashion information.
博客被认为是“最酷”的现代交流手段，但杂志仍然很受欢迎，被认为是时尚信息的主要来源。
7.We regard the sun as the chief source of heat and light.
我们把太阳看成是主要的热源和光源。
8.Manufacturing of batteries and printed circuit boards is a chief source of such pollution.
而电池制造和印刷电路板制作是此类污染的主要来源。
9.A broader shift away from the Middle East towards Africa as the chief source of crude oil is also under way.
同时，中国正在进行一场范围更大的转移，从中东转向非洲，使非洲成为中国的主要原油来源。
10.Taking Ganzhou pattern as chief source, new rural construction has been driven all around in Jiangxi Province.
以“赣州模式”为蓝本，江西省开始全面推动新农村建设。