造成这种现象的原因尚未彻底弄清。
The causes of the phenomenon are still incompletely understood.
造成这种现象的就是科学家们所说的暗能量。
Scientists call the culprit behind this accelerationdark energy.
但在过去造成这种现象的原因是选民很难了解到正确的信息。
But in the past it was often because it was often difficult for voters to access accurate information.
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