1·What is their main source of income?
他们的主要收入来源是什么？
—— 《牛津词典》
2·Research shows that young people still look to parents as their main source for health information.
研究表明年轻人仍然指望父母作为他们主要的健康信息来源。
—— 《柯林斯英汉双解大词典》
3·Our use of fossil fuels is the main source of excess greenhouse gases.
我们对化石燃料的使用是温室气体过量的主要来源。
4·I had several children and books were our main source of entertainment.
我有几个孩子，书是我们的主要娱乐来源。
5·Susannah Fox from the Pew Internet Project says doctors are still the main source of health information.
来自皮尤互联网项目的苏珊娜·福克斯表示，医生仍然是健康信息的主要来源。
6·Water was the main source of mechanical power, and by the end of the seventeenth century, England alone is thought to have had some 20,000 working mills.
水是机械动力的主要来源，而到了17世纪末，人们认为仅英格兰就有2万个左右的工作磨坊。
7·The main source of income, tourism, is expected to dry up completely this summer.
作为主要收入来源的旅游业预计将在今年夏天彻底枯竭。
—— 《柯林斯英汉双解大词典》
8·Even rubber trees, the local people's main source of income, were so dry that they could no longer produce rubber latex.
就连作为当地人主要收入来源的橡胶树，也因干旱而无法生产乳胶。
9·Red meat was the main source of octopine, which was good for losing weight.
红肉是肉碱的主要食物来源，肉碱有利减肥。
10·This is my main source of income.
我的大部分收入来源于此。