It's very turbulently mixed, because it's moving over those great big undersea mountains, and this allows CO2 and heat to exchange with the atmosphere in and out.
海中の大きな山の上を流れるので 激しく混合し 海中の大きな山の上を流れるので 激しく混合し これが海中と大気中の 二酸化炭素と熱を交換可能にします