Rising prices tend to raise incomes in the short term, so their long-term effects are obscured by the constant stream of new policies . 价格上扬会在短期内增加收入，但其长期影响却被不断出台的新政策掩盖了。
This difference between the prophetic and the engineering character of sciences does not correspond to the difference between long-term and short-term predictions . 预言的科学性和工程的科学性的这种区别不同于长期预测和短期预测之间的区别。
It is necessary to segregate the immediate seed production function from the long-term goal of developing broad-based genetic populations, by continuous breeding . 为此，应该把直接生产种子的任务，与为了连续育种，以培育广阔遗传物种这一长远育种目标分开，是很必要的。
