| 释义 |
nimbostratus
UK [nɪm.bəʊ'strɑ:.təs] US [-ɔʊ'strætˌ.əs] noun uncountable specialized
■a type of stratus (= flat grey cloud) formed in a wide thick layer at a low level and usually carrying rain 雨层云（低空的一种扁平的灰色层云，云层厚，面积大，多带来雨水） Compare altostratus ; cirrostratus |