the long-term effects of fertilizers肥料的长远影响Crushed bones make one of the best fertilizers.骨粉是最佳肥料之一.The use of pesticides and fertilizers produces cheap grain and vegetables.使用杀虫剂和化肥生产出廉价的谷物和蔬菜....
Crushed bones make one of the best fertilizers.骨粉是最佳肥料之一.Losses of Ca and Mg are accelerated by fertilizers which supply nitrate, sulphate and chloride.在施用硝酸盐 、 硫酸盐和氯化物的情况下会加速钙和镁的损失.inorganic fertilizers无机肥料Also, the ant...
I dropped the receiver back in the cradle.我把听筒放回听筒架上。He fixed the towing cradle round the hull.他把牵引支架固定在船体上。She rocked the baby to sleep in its cradle.她摇动摇篮哄婴儿入睡。...
In 1941, the train would have been pulled by a steam engine.1941年，火车本可以由蒸汽机车拉动。Who invented the steam engine?谁发明了蒸汽机？Who invented the steam engine?谁发明了蒸汽机?...
举国上下哀悼敬爱的领导人.The whole nation mourned the death of a much - loved leader.这位是我敬爱的朋友, 屈兰奇大夫.My valued friend, Dr Trench.你过去是, 现在是, 将来仍然是我敬爱的导师.You were, you are, and you remain to be my beloved mentor....