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 šaunas "firm, solid, fit, capable"). Meteorological use for "rounded mass of clouds" first attested 1803.
中文解释
1. cumul- + -us(拉丁语后缀，所以该词直接源于拉丁语，没做任何更改).
实用例句
1. Around midday, the fog lifted and puffy cumulus clouds appeared across the sky.
中午前后雾散了，满天出现了蓬松的积云。
来自辞典例句
2. From his bed he could see the great cumulus clouds that hung in the blue sky.
躺在床上,可以望见碧蓝的天空中飘浮着大块团状的积云.
来自辞典例句
3. A polar landscape of snowy hills, dramatic cumulus clouds and coastal glaciers.
雪域丘陵 、 引人注目的积云和沿海冰川的极地景观.
来自互联网
4. Piles of cotton - like cumulus clouds fill the sky a clear day.
晴朗天空堆满了像棉花一样的积云.
来自互联网
5. Cumulus clouds billow over the landscape near Cedar City, Utah.
