People still use old agricultural techniques as scientific agriculture is costly and even unknown.
人们还在使用原始的农耕技术，因为高科技农业的成本高昂，甚至不被人所知。
People still use old agricultural techniques as scientific agriculture is costly and even unknown.
人们还在利用原始的农耕技能，因为高科技农业的成本高昂，甚至不被人所知。
People still use old agricultural techniques as scientific agriculture is costly and even unknown.
人们还在利用原始的农耕技能，因为高科技农业的成本高昂，甚至不被人所知。
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