It will be so great watching the sun come up.

看着太阳升起将会很美妙。

《柯林斯英汉双解大词典》

Watching the sun rise over the mountain was an almost mystical experience.

看着太阳爬上山冈，这几乎是一种难以言传的体验。

《牛津词典》

On Day 6, my son was lying beside me on the beach, watching the sun going down.

第六天，儿子躺在我身旁的沙滩上，看着夕阳西下。

youdao

After dinner I sit behind the motel by myself, watching the sun drop behind the bluffs.

BBC: Missing pieces in Utah

His approach is to observe the transit in moonlight (which is reflected sunlight) rather than watching the sun itself.

ECONOMIST: Transits of Venus

Cooling down in the lake, and then watching the sun setting over the dunes while soaking in a hot spring is a surreal experience.

BBC: Siwa: An Egyptian oasis