It is difficult to forecast stock market trends.
股票市场趋势很难预测。
Of course, exchange rates are notoriously difficult to forecast.
当然，汇率变动的预测之难是众所周知的。
It is difficult to forecast maize heterosis based on the changes of peroxidase and e...
根据过氧化物酶同工酶或酯酶同工酶谱带的变化很难预测玉米杂种优势的表现。
All these characters of underground sedimentary stratum make it difficult to forecast the distribution of fracture.
地下岩体的所有这些特点使裂缝分布预测的难度加大。
How behind-the-scenes measures play out this year is much more difficult to forecast than the path of interest rates.
幕后的措施今年会如何发挥作用将比利率的走势更难预测。
It is very difficult to forecast the thin and narrow sandstone of fluvial facies because of the limit of seismic distinguish ment.
受到地震分辨率的限制，河流相薄而窄的砂体展布很难预测。
It's very difficult to forecast and diagnose boiler faults because of the complexity, nonlinear and large time delay in plant boiler system.
在电站锅炉系统中，由于其复杂性、非线性性、大延迟性等特点，对锅炉故障的预测和诊断相当困难。
After study the high-tech enterprise and the product, we find that the product life cycle of the high-tech enterprise is short; it is difficult to forecast demand; the product shortage cost is high.
通过对我国高新技术产业和高新技术企业产品的研究，我们发现高新技术企业产品的生命周期短、需求难以预测、产生缺货时缺货成本很高。
After study the high-tech enterprise and the product, we find that the product life cycle of the high-tech enterprise is short; it is difficult to forecast demand; the product shortage cost is high.
通过对我国高新技术产业和高新技术企业产品的研究，我们发现高新技术企业产品的生命周期短、需求难以预测、产生缺货时缺货成本很高。
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