为保持土壤肥力,农民搞作物轮作.Farmers rotate their crops so that the soil will remain fertile.农作物轮作有助于防止水土流失.Crop rotation helps prevent soil erosion.他连续5年在同一块地里种植不同的作物，研究人员称之为轮作。He grew a different crop on the same field five years i...
Some geezer called Danny did it.这事是个叫丹尼的家伙干的。The old geezer wouldn't let them play ball in his pasture.这老家伙不让他们在他的牧场上打球.He is a nice geezer, but a little talkative.他这怪老头,人挺不错的, 就是有点多嘴多舌....