束禾机

例句：

1. 1. The farmer used a tractor to harvest the crops.
   农民使用拖拉机收割庄稼。
2. 2. The old man was busy mowing the lawn with his lawnmower.
   老人正忙着用草坪割草机修剪草坪。
3. 3. The farmers are using modern farming techniques to increase crop yields.
   农民们正在使用现代农业技术来提高作物产量。