基本解釋[地球科學(xué)]晴天積雲(yún)英漢例句雙語例句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。blog.sina.com.cnfair-weather cumulus更多例句專業(yè)釋義地球科學(xué)晴天積雲(yún)