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...
制革工人硝皮以制作皮鞋.Tanners tan hides to make leather shoes.含有与氮原子相连的硝基的物质称为硝胺.Nitramines are substances which contain a nitro group bonded to nitrogen.较好的配方是那些高硝基增塑的硝化棉粘合剂配方.The preferred compositions are the highly nitroplasti...
Happiness was an emotion that Reynolds was having to relearn.雷诺兹已经不知道什么是快乐。Players will need to visit a class trainer to relearn spells and abilities.玩家需要访问一类教练,以relearn魔法和能力.With Weight Watchers, you will completely rel...