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. 珍珠雲(yún)是由於日出時(shí)的太陽(yáng)光穿過被一股強(qiáng)氣流吹起的冰晶躰時(shí)形成的。A cloud is a mass of vapor in the sky. 雲(yún)是天空中的水汽團(tuán)。a magnificent display of nacreous clouds 蔚爲(wèi)壯觀的一大片燦爛的雲(yún)A magnificent displayof nacreous clouds 蔚爲(wèi)壯觀的一大片燦爛的雲(yún)A cloud is a condensation of water vapour. 雲(yún)是由水蒸汽凝縮而成的。There are several kinds of cloud formations. 雲(yún)層的搆成方式有好幾種。 返回 nacreous cloud