一个因素可能是人们感觉到幸福或悲伤的程度，在心理学上被看作积极的或负面的影响。
One factor could be the degree to which people feel happy or sad, known in psychology as positive or negative affect.
如果人们谁正在与自己的生活仍然想知道，没有我的幸福或悲伤过任何其他人的生活有何影响？
In case people who are moving on with their lives are still wondering, did my happiness or sadness ever have any impact of others' lives?
一个人不管有多幸福，总是会有一些悲伤或失望。
However happy one is, there will always be some sadness or disappointment.
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