nacreous cloud

常見例句

Nacreous clouds form when the fading light at sunset passes through tiny ice crystals blown along by a strong jet of stratospheric air.
珍珠云是由于日出時的太陽光穿過被一股強氣流吹起的冰晶體時形成的。
A cloud is a mass of vapor in the sky.
云是天空中的水汽團(tuán)。
a magnificent display of nacreous clouds
蔚為壯觀的一大片燦爛的云
A magnificent displayof nacreous clouds
蔚為壯觀的一大片燦爛的云
A cloud is a condensation of water vapour.
云是由水蒸汽凝縮而成的。
There are several kinds of cloud formations.
云層的構(gòu)成方式有好幾種。