气壮山河的英文：
[Literal Meaning]
heroic spirit/sublime/mountain/river
as sublime and majestic as high mountains and great rivers

[解释]
气概豪迈而使祖国的山河更加壮丽。

[Explanation]
to be full of power and grandeur

[例子]
英雄们的事迹气壮山河，大学生们都被深深感动了。

[Example]
The heroes' stories were full of power and grandeur and all college students were deeply touched.

Sublime and heroic
气壮山河

The spirit is so vigorous that it affects even the mountains and the rivers
气壮山河