halo spot 晕斑病
spot halo 点光晕
spot halo detail 点光晕
A luminous spot on a lunar halo.
幻月，假月月晕上的光斑。
youdao
The typical symptom appeared as approximately circular spot with a yellow halo, without crateriform symptom as that of citrus canker.
病斑近圆形，周围有黄晕，但不象柑桔溃疡病那样有火山口开裂。
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