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the vastness of sth
vastness 是不可数名词，常与 the ... of 连用，强调某物在面积、范围或数量上的广大。
The vastness of the desert made us feel small.
沙漠的广袤让我们感到自己很渺小。
巨大；广大；广漠
vastnesses — plural of vastness
先理解核心含义，再看它在真实句子里的用法。
巨大；广大；广漠
the quality of being extremely large in size, extent, or number
The vastness of the desert made us feel small.
沙漠的广袤让我们感到自己很渺小。
巨大的性质
The quality of being vast.
在规模、范围或数量上异常巨大
unusual largeness in size or extent or number
巨大的事物
Something vast.
Standing at the edge of the canyon, we were struck by the vastness of the landscape.
站在峡谷边缘，我们被这片土地的广袤所震撼。
She tried to describe the vastness of the ocean, but words seemed too small.
她试图描述海洋的浩瀚，但言语似乎太苍白。
The vastness of the universe makes everyday problems feel less important.
宇宙的浩瀚让日常问题显得不那么重要。
vastness 是不可数名词，常与 the ... of 连用，强调某物在面积、范围或数量上的广大。
The vastness of the desert made us feel small.
沙漠的广袤让我们感到自己很渺小。
可用 feel、realize、grasp 等表示感知或理解的动词，后接 the vastness of 短语。
Standing on the shore, I realized the vastness of the sea.
站在海边，我意识到了大海的浩瀚。
该结构常用于描写海洋、太空、荒野等开阔空间，带有一种渺小或无边的感觉。
The tiny island seemed lost in the vastness of the ocean.
那座小岛仿佛迷失在浩瀚的海洋中。
Not this
The vast of the desert amazed us.
Use this
The vastness of the desert amazed us.
vast 是形容词，不能直接作名词；表达“...的巨大”要用名词 vastness，构成 the vastness of ...。
Not this
The ocean is vastness.
Use this
The ocean is vast.
系动词 is 后应接形容词 vast 作表语，vastness 是名词，意为“巨大”，不能代替形容词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
太空的浩瀚
The photos capture the vastness of space.
这些照片捕捉了太空的浩瀚。
海洋的辽阔
Standing on the cliff, she felt the vastness of the ocean.
站在悬崖上，她感受到了海洋的辽阔。
无比的浩瀚
The sheer vastness of the desert was overwhelming.
沙漠的无边无际令人震撼。
宇宙的广大
Astronomers study the vastness of the universe.
天文学家研究宇宙的广大。
体会其浩大
You need a map to appreciate the vastness of this country.
你需要一张地图才能体会这个国家的幅员辽阔。
太空的浩瀚
Astronauts often describe feeling awe at the vastness of space.
宇航员常常描述他们对太空浩瀚的敬畏之情。
海洋的浩瀚
Standing on the cliff, she was humbled by the vastness of the ocean.
站在悬崖上，她因海洋的浩瀚而感到自己十分渺小。
这一切的浩瀚
Late at night, he sometimes thinks about the vastness of it all and feels insignificant.
夜深人静时，他有时会想到这一切的浩瀚，感到自己微不足道。
像我们这样渺小的生物，只有爱才能让我们承受这份浩瀚。
In Carl Sagan's novel Contact, this quotation expresses the idea that only love can make the universe's overwhelming vastness endurable for tiny beings like us.
在卡尔·萨根的小说《接触》中，这句话表达了一个观点：只有爱才能让像我们这样渺小的生物承受宇宙那令人难以承受的浩瀚。
Use vastnesses naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 vast 记成‘广大的’，ness 是名词小尾巴，合起来就是‘巨大、广漠’；想象星空或大海的无边无际。
语域：mixed 常见场景：literary descriptions、popular science or reflective writing vastness 是比较书面的名词，表示“巨大、广大、广漠”，多用于文学描写、科普或较正式的文字中，日常口语里相对较少见。可根据具体文体译作“浩瀚、辽阔、广袤”等。
vastness /ˈvæstnəs/ rhymes exactly with fastness /ˈfæstnəs/. Words like happiness, darkness, and kindness share only the unstressed suffix /nəs/, so they do not rhyme. vast /væst/ shares the stressed syllable /væst/ but not the ending; do not treat it as a rhyme. nastiness /ˈnæstinəs/ looks similar but has an extra syllable and is not a rhyme.
Dictionary facts from ECDICT, WIKTIONARY.