lactation period [生理] 泌乳期 ; 哺乳期
different lactation period 不同泌乳期
Shortening lactation period 缩短哺乳期
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。
The advantage is that the lactation period takes longer and that the need for nurse sows is reduced.
这一点的好处是哺乳期变长，需要的奶妈猪就会减少了。
Her child is still in their lactation period.
她的孩子还处于哺乳期。
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