1650s, "a heap," from Latin cumulus "a heap, pile, mass, surplus," from PIE *ku-m-olo-, suffixed shortened form of root *keue- "to swell" (compare Sanskrit svayati "swells up, is strong," Greek kyein "to swell," Lithuanian ?aunas "firm, solid, fit, capable"). Meteorological use for "rounded mass of clouds" first attested 1803.
雙語例句
1. Around midday, the fog lifted and puffy cumulus clouds appeared across the sky.
中午前后霧散了，滿天出現了蓬松的積云。
來自辭典例句
2. From his bed he could see the great cumulus clouds that hung in the blue sky.
躺在床上,可以望見碧藍的天空中飄浮著大塊團狀的積云.
來自辭典例句
3. A polar landscape of snowy hills, dramatic cumulus clouds and coastal glaciers.
雪域丘陵 、 引人注目的積云和沿海冰川的極地景觀.
來自互聯網
4. Piles of cotton - like cumulus clouds fill the sky a clear day.
晴朗天空堆滿了像棉花一樣的積云.
來自互聯網
5. Cumulus clouds billow over the landscape near Cedar City, Utah.