科学准确地预测粮食产量，对于制定国民经济计划十分重要。
It is important to the national economic plan to forecast crop yields scientifically and accurately.
莫里斯·博恩斯坦说：计划是未来行动的方案，计划工作就是制定这种方案的过程，而国民经济计划指的是国家经济活动的方案。
As Morris Bernstein said, plan is the project of future behaves. Plan work just is the process of making the project, and national economy plan is the project of national economy actives.
莫里斯·博恩斯坦说：计划是未来行动的方案，计划工作就是制定这种方案的过程，而国民经济计划指的是国家经济活动的方案。
As Morris Bernstein said, plan is the project of future behaves. Plan work just is the process of making the project, and national economy plan is the project of national economy actives.
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