随着太阳西下，影子越拉越长。

The shadows lengthened as the sun went down.

《牛津词典》

两个孪生的太阳西下，渐渐隐没在林间。

The twin suns are setting behind a black wall of alien trees.

youdao

太阳西下，夜晚一片黑暗。

After the sun has set, the night is dark.

youdao

太阳西下，夜晚一片黑暗。

After the sun has set, the night is dark.

youdao