因为显而易见的健康原因和不那么明显的情感原因，与好朋友勾搭是种很棘手的状况。
Hooking up with a friend can be a tricky situation, for the obviously health reasons and less obvious emotional reasons.
陆军与心理研究人员共同开展了一项调查，用以评估士兵的家庭关系及健康状况——包括情感、社交、精神。
Working with psychological researchers, the Army developed a survey to assess a soldier's family relationships and his well-being - emotionally, socially and spiritually.
这些研究结果还与他们进行的其他研究有关，例如是一些研究表明积极的情感与精神与身体的健康和寿命周期的变化有关。
The results are in line with hosts of other studies demonstrating that positive emotions correlate with variables including mental and physical health and longevity.
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