sky[skaI]n.skies天,天空The sky was blue and clean.天空蔚蓝晴朗。After the storm the sky cleared."暴风雨过后,天空明朗了。"firmament[5fE:mEmEnt]n.天空, 太空, 苍天heaven[5hev(E)n]n.天国,天堂Heaven knows!天知道!;确实无疑地。'Good heavens!' exclaimed his wife.`天哪 !'他妻子喊道。天空,天By Heaven!老天在上!Suddenly the heavens opened and it poured with rain."忽然,天空象裂开似的,下起倾盆大雨来。"极乐世界;极乐I was in heaven at the news.我听到这消息乐得飘飘然。"When I was a small child, it was heaven to go nesting.""幼年时,出去摸鸟蛋总是把我乐得什么似的。"