The essential cause that influenced Hankou' s commerce culture was its excellent geographic location.

影响汉口商业文化最本质的原因是地理位置。

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Before such a change will occur, however, the essential cause of one's self-loathing needs to be apprehended.

然而在改变发生之前，我们需要先领会自我厌恶的本质原因，我不是指历史原因。

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It is found that deficit in working memory is the essential cause of mathematical learning disabilities.

已有研究表明，工作记忆的缺陷是数学学习困难的根本原因。

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The boards say they are distressed over the potential harm an outdated or unsuitable contact lens can cause, making verification of a valid prescription essential.

FORBES: An Eye For An Eye

"If travel is essential, the public should avoid exposed or coastal areas where gusts could cause significant harm to individuals, " he said.

BBC: Wind damaged house

On the face of it, genes that cause diseases do share one thing: they are, in a technical sense, non-essential.

ECONOMIST: Genetic disease and evolution