agriculturalist

例句：

1. 1.He is an agriculturalist who specializesin crop rotation.
   他是一位专门研究作物轮作的农业专家。
2. 2. Theagriculturalist has been workingon sustainable farming practices for years.
   这位农业家多年来一直在从事可持续农业实践。
3. 3. The agriculturalist's researchhas helped improve the yield of crops inthe region.
   这位农业家的研究成果已经帮助该地区提高了农作物的产量。