The seasonal variation of phytoplankton zooplankton and nutrients at a fixed station and in the extended Gulf Stream system are studied by using a vertically averaged plankton model respectively.

运用垂直平均值的浮游生物模型研究了在一个固定站和扩展湾流体系中，浮游植物、浮游动物和营养盐的季节变化。

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The seasonal variation of phytoplankton, zooplankton and nutrients at a fixed station and in the Extended Gulf Stream System are studied by using a vertically averaged plankton model, respectively.

运用垂直平均值的浮游生物模型研究了在一个固定站和扩展 湾 流体系中，浮游植物、浮游动物和营养盐的季节变化。

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Second, there were rapid changes in the ocean circulation system, switching the Gulf stream on and off.

第二，出现海洋环流系统的迅速变化，控制了墨西哥湾流。

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If the sinking were stopped by adding fresh water (a deus ex machina often invoked to change the climate), the Gulf Stream would hardly care except in so far as the wind system changed too.

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