The spring sky, why the sky is colorful it?

春天的天空，为什么天空是五颜六色的呢？

youdao

They speak of the sky-pervading sorrow which lowers in the darkness of clouds; the speechless deep intoxication of the forest-roaming spring.

它们诉说着黑云中沉下的漫天哀愁；诉说着春天在漫步于森林中时的无言的深深沉醉。

youdao

In spring, the sky is very blue, the cloud is white, and the air is fresh.

春天，天空很蓝，云是白的，空气是新鲜的。

youdao

When lilacs last in the dooryard bloom'd And the great star early droop'd in the western sky in the night, I mourned, and yet shall mourn with ever-returning spring.

VOA: special.2009.12.31

This is how the poem begins: When lilacs last in the dooryard bloomed, And the great star early drooped in the western sky in the night, I mourned, and yet shall mourn with ever-returning spring.

VOA: special.2009.04.12

The Chinese believed that the rising of Arcturus, the fourth-brightest star in the sky, caused spring to burst forth, while the Egyptians thought that the appearance of Sirius, the brightest star in the sky, brought about the annual flooding of the Nile.

ECONOMIST: The Star of Bethlehem

Ewan McGregor, Jude Law and Jarvis Cocker are among the directors working on the film, which will be broadcast on Sky Premier in the Spring.

BBC: denise van outen

As reliably as autumn brings Orion to the night sky, spring each year sends a curious constellation to the multiplex: a minor cluster of romantic comedies and the couples who traipse through them, searching for love.

NEWYORKER: The Disconnect