题目内容：

happiness more often than not ends in sadne
请解释下A选项 happiness more often than not ends in sadness 为什么翻译成“快乐多数情况下以悲伤告终”这里的than 和not应该怎样理解?
原题是“we can learn from the last paragraph that the author believes：”

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more often than not
通常；多半