Regular physical activity may improve brain function, both by increasing blood flow to the brain and stimulating the production of hormones and nerve growth factors involved in neurogenesis.
有规律的体育活动有助于改善脑功能，它不仅可以增加流入大脑的血液，还可以刺激与神经发育有关的激素及神经生长因子的产生。
The nervous system and the hormones produced by glands act as a regulatory system. They control the development and function of all body parts.
神经系统和腺体产生的激素，起到一种调节系统的作用。它们控制身体各部分的发育和功能。
Iodine is a component in thyroid hormones, which help regulate metabolism, growth and function of many key organs, such as the brain, heart, kidney and thyroid.
碘是甲状腺激素的组成部分。甲状腺激素能够帮助很多重要器官的生长和新陈代谢及其功能的发挥，包括大脑、心脏、肝脏和甲状腺。
So hormones have a vital function in the aspect of disease resistance of the tested watermelon cultivars.
因此，在不同抗性西瓜品种对疫病的抗性方面内源激素也起了重要作用。
Scientists from the University of Illinois found positive moods reduced stress-related hormones and increased immune function.
来自伊利诺伊大学的科学家发现，乐观情绪有助于减少应压激素分泌，增强免疫能力。
Scientists from the University of Illinois found positive moods reduced stress-related hormones and increased immune function.
来自伊利诺伊大学的科学家发现，乐观情绪有助于调节激素分泌，增强免疫能力。
Scientists from the University of Illinois found positive moods reduced stress-related hormones and increased immune function.
来自伊利诺伊大学的科学家发现，乐观情绪有助于调节激素分泌，增强免疫能力。
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