A spectral minion is the soul of an intelligent humanoid who died before she could fulfill an important vow.

当一个智能类人生物在完成一个重要的誓约前死去，他的灵魂可能会变成一个灵体生物。

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At the very center of the composition, an angel ushers Ruiz's tiny, spectral soul through the narrow chasm leading to eternity, literally enacting the painting's promise of salvation.

WSJ: El Greco's Masterpiece The Burial of the Count of Orgaz: A Vision of Faith | By Mary Tompkins Lewis