downwelling
downwellingnoun- [mass noun]the downward movement of fluid, especially in the sea, the atmosphere, or deep in the earth
(海洋、大气或地球深处流体的)向下流动
adjective- characterized by or undergoing such movement
(海洋、大气或地球深处流体)向下流动的
downwelling mantle.
向下流动的地幔。
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