星空的英语是 "starry sky" 或 "night sky"。

山的英语是 "mountain"。

这些词的来源都是拉丁语。"Starry" 来自拉丁语的 "stellatus"，意思是 "星的"，"sky" 来自拉丁语的 "caelum"，意思是 "天空"。"Mountain" 来自拉丁语的 "montem"，意思是 "山"。

下面是一些英文例句和中文翻译：

The stars twinkled in the clear night sky. (星星在清晰的夜空中闪闪发光。)
I love to go hiking in the mountains. (我喜欢去山上远足。)
The mountain air is fresh and invigorating. (山间的空气清新而充满活力。)
I love to sit outside and watch the stars on a clear night. (我喜欢坐在外面看星星。)
The mountain scenery is breathtaking. (山景令人惊叹。)