He developed his biodiesel 18 years ago, using knowledge he gained from working on a plantation and fixing farmmachinery.
18年前，他利用自己在种植园工作中和维修农场器具时所获得的知识发明了生物柴油。
2
But things are different now, getting better and better living conditions, people lived in high-rise, working tools has also been improved, all use of agricultural machineryfarm.