sky without clouds的用法和樣例：
例句
- The cloudless sky was jewelled with myriads of glittering stars.
無雲的晴空鑲嵌著無數顆閃爍的星星。 - Cloudless, that is, except for two or three long white lines smeared across the perfect blue sky by airplanes like smudges on a pane of glass.
無雲的天空，就是，除了兩三行飛機留下的白色長拖尾橫跨完美的藍色天空，就像是有髒東西在窗格玻璃上一樣。
