任何事的产生都必然有其原因。
一切结果都必然有其原因。
然而需要注意的是，先进的优化器在生成一个特定的访问计划时，必然有其原因，所以在应用指南之前，务必理解是什么原因导致查询的性能低下。
However, note that the state-of-the-art optimizer has a reason to generate a particular access plan, so it is important to ensure that we understand the inefficiency before we apply the guidelines.
由加拿大最先提出这一理念有其必然性，加拿大独特的历史、人文思潮以及当时特殊的国际环境是这一理论形成的原因。
The concept was first proposed by Canada has its inevitability: Canada's unique history, cultural trends and the special international environment are the reasons for the formation of this theory.
实用主义作为一种外来哲学被中国自觉而广泛地接受必然有其深层的原因。
As a foreign philosophy, pragmatism's being widely and consciously accepted must be due to some deep reasons.
实用主义作为一种外来哲学被中国自觉而广泛地接受必然有其深层的原因。
As a foreign philosophy, pragmatism's being widely and consciously accepted must be due to some deep reasons.
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