Soil organic matter would show a downward trend in the absence of straw returning.
在没有秸秆还田的情况下，土壤有机质有下降的趋势。
The article finds that the marginal cost of China's coal industry since 1999 show a downward trend, and after 2002, there are signs of the inflection point of drop-rate slowing down.
发现我国煤炭产业边际成本自1999年以后呈现下降趋势，并在2002年以后下降速率放缓，有出现拐点的迹象。
However, this is just an overall and average change trend, and in real application, the overconfident level of partners would show a trend of fluctuating downward.
这是合伙人过度自信水平的一种总体的平均变化趋势，在实际应用中，合伙人的过度自信水平将呈现出波动下降趋势。
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