nacreous cloud

常见例句

Nacreous clouds form when the fading light at sunset passes through tiny ice crystals blown along by a strong jet of stratospheric air.
珍珠雲是由於日出時的太陽光穿過被一股強氣流吹起的冰晶躰時形成的。
A cloud is a mass of vapor in the sky.
雲是天空中的水汽團。
a magnificent display of nacreous clouds
蔚爲壯觀的一大片燦爛的雲
A magnificent displayof nacreous clouds
蔚爲壯觀的一大片燦爛的雲
A cloud is a condensation of water vapour.
雲是由水蒸汽凝縮而成的。
There are several kinds of cloud formations.
雲層的搆成方式有好幾種。