So a positive attitude can increase levels of nitric oxide, which help to balance neurotransmitters, improve immunity, and increase circulation, she says.
她说，所以积极的态度能够增强一氧化氮的水平，一氧化氮能够帮助平衡神经递质，提高免疫力和增加循环。
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But an even more positive step would surely be to keep our computers in circulation longer by passing them on to someone else - or so we are often told.
The increase of soil enzyme activity and microorganism amount indirectly bring positive effects on fruit quality and yield by promoting nutrition circulation courses.