fair-weather cumulus
常見(jiàn)例句
- Cumulus clouds are big, white masses of fair-weather clouds that drift across the daytime sky. But heavy layers of cumulus clouds can threaten rain. (4)
積雲(yún)是白色的、標(biāo)志著好天氣的大雲(yún)團(tuán)，在白日的天空中飄浮。但是，厚厚的積雲(yún)層可能是要下雨的征兆。
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