Two brothers worked together on the family farm.

有两个兄弟一起在家庭农场里干活。

The optimal scale of production is the family farm.

最佳生产规模就是家庭农场。

Newton left school to help on the family farm.

牛顿离开学校帮助照料家里的农场。

The optimal scale of production is the family farm.

这种生产最佳的规模是家庭农场。

To escape the disease, Newton returned to the family farm.

为了躲避疾病，牛顿回到了家庭农场。