Current thinking is that women distribute the fat below the waist because it's a fat storage depot for pregnancy and lactation.

流行观点认为女性把更多脂肪储存在腰以下，是为怀孕和哺乳提供脂肪储存。

Harbor seals are small compared with other phocids species such as grey seals, all of which are known to fast for the entire lactation period.

与其他 phocids 物种（如灰海豹）相比，港海豹体型较小。众所周知，灰海豹在整个哺乳期都禁食。

Since such a large proportion of their fat stores is exhausted despite feeding, mother seals clearly cannot support all of lactation using only energy stored before giving birth.

由于如此大比例的脂肪储备在喂养过程中会消耗殆尽，海豹母亲显然不能仅靠生育前储存的能量来维持整个哺乳过程。