For example, diets rich in fruit and vegetables, which contain immune-system boosting micronutrients, enhance the body's natural defenses against infectious disease.
例如，多吃富含微量营养素的蔬菜水果，可以提升免疫系统的功能，增加身体抵抗力，预防传染病。
They tested this idea in fruit flies by using genetic engineering to enhance or repress the activity of Rac in the parts of the flies' brains associated with short-term memory.
他们在果蝇身上验证这个想法，通过基因工程方法，在过硬大脑内于短期记忆有关的部位，加强或压抑Rac蛋白的活性。
Based on these results, we put forward following adjustment measures: (1) reduce the grain crop especially the highland barley and wheat, enhance the vegetable and fruit.
针对这些问题，笔者提出以下调整措施：(1)降低粮食作物尤其是青稞和小麦的播种面积，增加蔬菜、水果的种植面积。
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