| 释义 |
stratus
UK ['streɪ.təs] US ['streɪ.tˌəs] noun uncountable specialized
■a type of flat grey cloud found at the lowest level, below all other cloud types, and causing dull weather or light rain 层云（一种扁平的灰色云，发现于最低位置，低于所有其它类型的云，可引起阴沉的天气或小雨） Compare cirrus ; cumulus ; nimbus |