It is very difficult to teach illiterate people the paths to good health, the advantages of family spacing, the way to increase crop yields, nutrition for their children, and how to earn a living.

要教导不识字的人们了解健康之道、生育间隔的优点、增加作物产量的方法、注重子女的饮食营养乃至于如何谋生，都非常不容易。

youdao

He was the first well-known American writer to try to earn a living through writing alone, resulting in a financially difficult life and career.

他是第一个尝试完全依赖写作谋生的知名美国作家，从而导致贫困潦倒。

youdao

Tony, a tough little Cockney from London's East End, wanted to be a jockey and didn't make it, but he managed to pass The Knowledge, the formidably difficult test for London taxi drivers, then buy his own taxi and earn a good living for himself and his family.

WSJ: Film Review: Life, Not by the Numbers by Joe Morgenstern