妊娠期及哺乳期小鼠第四脑室外侧隐窝室管膜超微结构的改变
1·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。
2·Also pregnant, I am also in the lactation period of pregnancy, and later made a medical abortion.
也要怀孕的，我也是在哺乳期怀孕的，后来做了药流。
1·The shorter the lactation period was, the poorer the thermostability was.
泌乳期越短的莎能奶山羊初乳的热稳定性越差。