| 释义 |
nacreous cloud nacreous cloud n.（名词）A cloud resembling a cirrus, showing iridescent coloration when the sun is several degrees below the horizon.珠母云：当太阳在地平线以下几度时，出现像卷云的一种珍珠光泽的彩云语源:From nacre [from the iridescent coloring of mother-of-pearl] 源自 nacre [来源于珠母的珠光色] |