Rich farmers to learn the secret of happiness!
富人向农夫讨教快乐的秘诀!
Farmers grow rice in the rich soil.
农民们在肥沃的土地上种水稻。
The foraminifera in the core samples were most abundant after 1950, when farmers began using some fertilizer, which is rich in nutrients.
核心样本中的有孔虫在1950年之后最多,当时农民开始使用一些营养丰富的肥料。
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