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（单词翻译）
It’s hardly clear that there is a causal relationship between optimism and health; it could be that they are related to the same underlying1 gene2 complex or set of mechanisms3. Still, it sure is tempting4 to surmise5 that it’s partly a positive attitude that keeps people alive for so long. It may actually be possible that a lot of what my parents have been telling me for years is true. If you think positively6, good things may happen to you. If you think negatively, then you may doom7 yourself.
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