主源；第一手来源

原始来源，第一手来源

dietary source───饮食来源

primary care───初级治疗，初级护理；基层医疗

primary role───主要任务；主要角色

primary producer───初级生产国；初级生产者

primary colours───原色；基本色

primary concern───主要关心的事

primary insurer───主要保险人

primary product───原始产物，初次产物（如粮食，矿石等）

primary purpose───主要目的；根本目的

Many of the villagers rely on fishing as their primary source of income.───这里多数村民依赖捕鱼作为他们主要的收入来源.

On the contrary, the generating revenue is the primary source of repayment of most loans.───恰恰相反, 产生的收益才是归还大多数贷款的主要资金来源.

The common people, considered as the primary source of political power.───普通人, 被认为是政治权力的主要资源.

Academic journals tend to be the primary source of news for science reporters because that is where researchers usually publish their findings.───学术杂志通常是科学记者的主要新闻来源，因为科学家通常是在这些杂志上发表他们的发现。

This is the primary source from which human knowledge develops.───这是人的认识发展的基本来源.

budget cutbacks, layoffs and reductions in benefits or increases in hours, clearly our paychecks are not our primary source of satisfaction.───削减预算，减少利益或者被迫增加工作时间，很明显，我们的收入并不是让我们满意的主要源泉。

Stephen hole under that black Longquan, is one of the primary source water Fuyang.───洞下有泉,称黑龙泉, 是滏阳河的主要水源之一.

Regarding investment, Hong Kong is still the primary source of overseas investments attracted by the inland.───在投资方面, 香港仍然是内地吸引境外投资的首要来源地.

The labour market is the primary source of the inequalities which are carried into retirement.───劳动力市场是从就业到退休一直存在的不平等的主要来源.

Aside from observation, my primary source of knowledge was my education.───除了实际观察以外, 我的主要知识来源是我接受的教育.

Many parasitic, tropical, and "orphan" diseases are infrequent in the developed world, the primary source of revenue for medicines manufacturers.───许多寄生虫病、热带病和“罕见”病在作为药品制造商主要收入来源的发达世界很少见。

The family continues to be the primary source of care and comfort for people as they grow older.───随着年龄的增长，家庭仍然是人们获得关爱和安慰的主要源泉。

In addition, the fishing industry was a primary source of wealth in Massachusetts.───此外捕鱼业也是马萨诸塞一带财富的主要来源.

Historically, the primary source of lead emissions has been the result tetraethyl lead additives to gasoline.───从历史的角度讲, 铅挥发的最初来源是添加到汽油中的四乙基铅.