primary source

基本解釋

A little more than half of those companies are run by workers with another primary source of income.
這其中，略微超過半數的公司，都是由有另一主要收入來源的人來開辦的。
Academic journals tend to be the primary source of news for science reporters because that is where researchers usually publish their findings.
學術雜志通常是科學記者的主要新聞來源，因為科學家通常是在這些雜志上發(fā)表他們的發(fā)現。
Between budget cutbacks, layoffs and reductions in benefits or increases in hours, clearly our paychecks are not our primary source of satisfaction.
削減預算，減少利益或者被迫增加工作時間，很明顯，我們的收入并不是讓我們滿意的主要源泉。

That's not the only place but that's a primary source of it.
這不是唯一的出處,但是最主要的來源
耶魯公開課 - 關于食物的心理學、生物學和政治學課程節(jié)選
You see the lactose of course from milk, and then when you get down to the cellulose, and we're talking about starches and then fiber gets involved in here too, then cereals and vegetables become the primary source of these.
你們知道乳糖來自于乳類,當你研究纖維素的時候,以及我們在這里所說的淀粉和纖維,他們最主要的來源是谷類和蔬菜
耶魯公開課 - 關于食物的心理學、生物學和政治學課程節(jié)選

This is probably your primary source of income, so make the most of it.
FORBES: Earning, Spending, And Saving: The Building Blocks Of Personal Finance
The book focused on access to alternative asset classes as the primary source of endowment alpha.
FORBES: John Bogle Didn't Have All The Data