meridional flow

例句：

1. 1.The meridional flow is responsible for the movement of water across the land.
   赤道流负责水在陆地上的流动。
2. 2.The meridional flow has a significant impact on the climate of the region.
   赤道流对该地区气候有重大影响。
3. 3.The meridional flow is essential for the survival of many species in the area.
   赤道流对于该区域许多物种的生存至关重要。