1·Other respiratory regulating mechanisms apparently cease functioning during sleep.
其他呼吸调节机制显然在睡眠期间停止运行了。
2·Together with predation, it is the most important density-dependent factor in regulating population growth.
在调节种群增长方面，它与捕食一起是最重要的密度制约因子。
3·Now researchers suspect that dreams are part of the mind's emotional thermostat, regulating moods while the brain is "off-line."
现在，研究人员怀疑，梦是大脑情绪恒温器的一部分，在大脑“离线”时调节心情。
4·Research published in recent years has shown that running changes your brain and mind in some fascinating ways, from increasing your brain function to regulating your emotions.
近年来发表的研究表明，跑步以一些有趣的方式改变了你的大脑和思维，从增强大脑功能到调节情绪。
5·We have known about this phenomenon for a long while, and have accepted that pheromones, secreted scents, are the factor regulating the hormones.
我们已经了解这种现象很长时间了，并且认为费洛蒙(信息素)和分泌气味是调节激素的主要因素。