sulky disk plough

例句：

1. 1.The farmer was so frustrated with the slowprogress of his crops that he decided touse an unhappy disk plow instead.
   这位农民对农作物进展缓慢感到沮丧，决定使用一个不开心的圆盘犁。
2. 2.The old man had a bad day atwork and returned home feeling unhappy, sohe decided to use an unhappy disk plow to help him relax.
   那位老人在工作上遇到了不愉快的事情，回家后心情很糟糕，于是决定用一个不开心的圆盘犁来放松自己。
3. 3. The farmers in the area werecomplaining about the hard work they hadto do with their unhappy disk plows, but they knew it was necessaryfor their crops to grow well.
   该地区的农民抱怨他们不得不使用不开心的圆盘犁进行艰苦的工作，但他们知道这是为了他们的庄稼能够茁壮成长所必需的。