乐观的人有良好的社交网络和人际关系，这可能会帮助他们应对慢性抑郁，而慢性抑郁是引发心脏健康的一个危险因素。
Optimistic people have good social networks and strong social relationships, which could help them cope with chronic stress, a risk factor for heart disease.
而慢性应激是抑郁症的主要发病诱因，慢性应激抑郁症模型被公认为是研究抑郁症的理想模型。
Chronic stress is the primary inducement for depression. Chronic mild stress model is a idea model for the study of depression.
而慢性应激是抑郁症的主要发病诱因，慢性应激抑郁症模型被公认为是研究抑郁症的理想模型。
Chronic stress is the primary inducement for depression. Chronic mild stress model is a idea model for the study of depression.
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