momentous
Approving
Formal
例子
With the unveiling of an ambitious space exploration project, humanity took a momentous leap forward, venturing into uncharted territories and expanding our understanding of the universe.
随着一项雄心勃勃的太空探索项目的揭幕，人类向前迈出了重大的一步，冒险进入未知领域并扩展了我们对宇宙的理解。
词汇树
momentously
momentousness
momentous
moment
