事实上，含糊其辞的中奖可能性要比获奖条件清晰明确的博彩更有效。
In fact, vaguely-stated possibilities of winning a prize were more effective than options with hard odds included.
失败的一个主要原因是不完整的、含糊的或不明确的需求。
One primary cause of failures is incomplete, vague, or ambiguous requirements.
此外，这些主要规范中的每一个都包含一些会妨碍互操作性的含糊之处，因此大家就需要理解规范的明确解释。
Moreover, each of the main specifications contains ambiguities that can stifle interoperability, thus requiring understanding of the specific interpretations of the specs.
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