Farmers need all the "updates from science" - drought-resistant maize varieties and access to irrigation, fertilizers and veterinary medicine - to increase Africa's food production.
农民需要所有的“科学进展”——耐旱玉米品种、获取灌溉、化肥和植物药品——以增加非洲的粮食产量。
Science, after having long groped about, now knows that the most fecundating and the most efficacious of fertilizers is human manure.
经过长期的摸索，科学今日已经知道肥效最高的肥料就是人肥。
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