When they are six or seven years old, many children leave school to work in the fields or at home.

当他们六、七岁的时候，许多孩子离开学校去田里或在家里干活。

youdao

At dawn they started off to work in the fields.

天一亮他们就下地干活去了。

《新英汉大辞典》

He hired himself to work in the fields for one summer.

他曾受雇在田里干一个夏天的活。

youdao

They had to work. By the time Sarah was five years old, she was picking cotton in the fields with her family.

VOA: special.2010.03.28

That's right. Louisiana Slim he's sometimes called. Yes, Sir. I sure have met Big Slim. And he used to work in the east Texas oil fields?"

对，人们有时叫他路易斯安那的细杆，是的先生我肯定,遇见过，他过去是不是经常在得克萨斯州东部的油田工作？“

耶鲁公开课 - 1945年后的美国小说课程节选

They were listening to the radio. They were making the children work in the fields.

VOA: standard.2010.04.01

The children started the task, but then went off to school or to work in the fields, and the housewife brought in more buckets.

FORBES: Poverty in the Past

Families get paid to send their children to school, instead of to work in the fields, but only so long as the children actually attend.

ECONOMIST: Mexico

Father-of-three, Nagina Manjhi, tells me that things are now even worse than before: "We used to work in the fields or do other manual labour and somehow manage to make a living, " he explains.

BBC: News - Today - India's caste-offs