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。
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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