upwelling current

例句：

1. 1. The upwelling current brings nutrients to the ocean floor.
   上升流为海洋底部带来营养物质。
2. 2.This region is famous for its upwelling currents that produce high-quality seafood.
   这个地区以其产生高品质海鲜的上升流而闻名。
3. 3. Upwelling currents are essential for maintaining the health of coral reefs in tropical waters.
   上升流对于热带水域珊瑚礁的健康至关重要。