mother-of-pearl clouds
英
美
- clouds n.云；烟云名词cloud的复数形式.
- mother n.母亲；妈妈adj.母亲的；母体的；本源的vt.生育；像母亲一样关爱
- of prep.关于；...的（表所属）；出身于；由于
- pearl n.珍珠v.(用珍珠)装饰；呈珍珠状adj.珍珠般的
名词 mother-of-pearl cloud:
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a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon
