我们国家有几亿农民，要向每个农民讲解施肥原理，是不现实的。
Our country has several hundred million farmers, it is not practical to explain the principles behind fertilizer to all of them.
我们国家有几亿农民，要向每个农民讲解施肥原理，是不现实的。
Our country has several hundred million farmers, it is not practical to explain the principles behind fertilizer to all of them.
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