n. 桅顶电光〔一种雷电发生时在高塔等尖顶上出现的放电现象〕 (＝St. Elmo's fire)。
an electrical discharge accompanied by ionization of surrounding atmosphere 同义词：corona discharge, corona, St. Elmo''s fire, Saint Elmo''s fire, Saint Elmo''s light, Saint Ulmo''s fire, Saint Ulmo''s light, electric glow,
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