常見例句A cloud is a mass of vapor in the sky. 雲是天空中的水汽團。Not at all,but those are cumulonimbus clouds building up there. 這裡是表肯定還是否定?。?/li>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。The couple seemed to be on cloud nine. 那對夫婦看上去極其幸福。The sun disappeared behind a cloud. 太陽消失在一片雲後麪。 返回 cloud-built