太阳正在下山。

The sun is descended down.

youdao

明尼苏达州现在已经是晚上的时间了，太阳正在下山，我妻子罗莎就住在这里。

Now it's becoming evening time over 4 Minnesota where my wife lives, Rosa, the sun is going down.

youdao

看，天空正在慢慢变暗，正在下山的太阳给大地洒下一片金色的余辉。

Look, the sky is getting dim gradually. The setting sun is covering the earth with golden rays.

youdao