Tiny amounts of some hormones can modify our moods and our actions, our inclination to eat or drink, our aggressiveness or submissiveness, and our reproductive and parental behavior.

微量的一些激素可以改变我们的情绪和行为，我们的饮食倾向，我们的侵略性或顺从性，以及我们的繁衍和作为父母角色的行为。

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So, it is necessary to analyze the effect of rural-urban mobility on reproductive behavior.

因此，这里有必要对乡城人口流动对生育行为的影响做一分析。

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The basic laws of reproductive behavior and the relation between them and environment of Henry chestnut have been studied through sampling investigations and tracing studies.

本研究具体通过抽样调查、跟踪研究等方法系统研究了锥栗生殖行为的基本规律及其与环境因子之间的关系。

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