单词 | opacus |
释义 | opacus [ō`pā·kǝs] METEOROLOGY A variety of cloud (sheet, layer, or patch), the greater part of which is sufficiently dense to obscure the sun; found in the genera altocumulus, altostratus, stratocumulus, and stratus; cumulus and cumulonimbus clouds are inherently opaque. |
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