选用新品种或采用新技术、新作法耕种管理，为大家做示范的田地model field

• 该地区有科技示范田50多万亩。

  There are more than 50,000 mu of technology demonstration fields in this region.

• 通过示范田的做法证明，在发展市场经济中，政府可以大有作为。

  In practice, model fields have proven that the government can play a significant role in the development of the market economy.