雨停后，一道明亮的彩虹出现在天空。

After the rain stopped, a bright ___rainbow appeared in the sky.

这幅画展示了彩虹的所有颜色。

The painting displayed all the colours of the ___rainbow.

孩子们的画作使用了彩虹的所有颜色。

The children's drawings were in all the colours of the ___rainbow.