maternal behavior的用法和样例：
例句
- In addition to preparing the mother for the discomfort of birth, the endorphins may initiate maternal behavior.
脑内啡是具有止痛作用的蛋白，除了帮助母鼠克服分娩的不适外，也可能引发母性行为。 - Pregnant and nursing rats have a greater number of neural connections, particularly in the region of the brain that controls hormones and maternal behaviour.
怀孕期间和育儿期间的老鼠的神经连接会增多，尤其是大脑中控制荷尔蒙和母性行为的区域。
