古海 meaning in English

furumi
furuumi
koumi

( 2 ) ln winter of the northern hemisphere , because of the difference in the land - ocean distribution , the temperature nowadays is lower than that of 14mab . p . simulated in the upper layer but higher in the middle layer ( about 200 - 1500m ) . in deep ocean the discrepancy of temperature seems hardly to be obvious
( 2 )北半球冬季，由于海陆分布的差异使得海温在海洋上层古海温要暖于现代，在海洋中上层(约200 ? 1500米)现代的海温则要暖于14mab