There are several hypotheses, including warming or cooling of Earth, changes in seasonal fluctuations or ocean currents, and changing positions of the continents.

有几种假说，包括地球变暖或变冷，季节波动或洋流的变化，以及大陆位置的变化。

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The seasonal fluctuations about infectation percentage and the harm on the Corbicula fluminea were compared.

比较了感染率的季节性波动和对 Corbicula fluminea 的危害。

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So have seasonal fluctuations.

因此有着季节性的波动。

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It also replaced term loans with revolving lines of credit to suit the seasonal fluctuations.

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High compensation helps offset the risks and seasonal fluctuations that come with the work.

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The advantage of these moving averages is that they smooth out both seasonal fluctuations and simple measurement error.

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