fair-weather cumulus
常见例句
- 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)
积云是白色的、标志着好天气的大云团，在白日的天空中飘浮。但是，厚厚的积云层可能是要下雨的征兆。
blog.sina.com.cn 返回 fair-weather cumulus