相反，诸如季节性温度变化等高频波动是可以观察到的，而且在某种程度上是可以预测的，因此群体可以相应地调整它们的行为。
In contrast, high-frequency fluctuations such as seasonal temperature variations are observable and somewhat predictable, so that groups could have adapted their behaviors accordingly.
价格上巨大和未能预料到的波动，将为农民带来更多的不确定性，并且给最弱势群体带来伤害。
Large and unpredictable price fluctuations can create uncertainty for farmers and adversely impact the most vulnerable populations.
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