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quietness of [noun phrase]
The quietness of the library was soothing.
图书馆的寂静令人感到安慰。
平静, 寂静
先理解核心含义，再看它在真实句子里的用法。
平静, 寂静
the property of making no sound
The quietness of the library was soothing.
图书馆的寂静令人感到安慰。
无声；寂静或安静
Absence of sound; silence or hush.
无干扰；平静、安宁或宁静。
Absence of disturbance; calm, stillness or serenity.
The quietness of the library helped me concentrate on my studies.
图书馆的寂静帮助我集中精力学习。
She enjoyed the quietness of the forest after a long hike.
长途徒步后，她享受森林的宁静。
The quietness of the early morning was broken only by birdsong.
清晨的寂静只被鸟鸣打破。
The quietness of the library was soothing.
图书馆的寂静令人感到安慰。
常用动词包括enjoy, appreciate, break, disturb等。
She enjoyed the quietness of the early morning.
她享受清晨的宁静。
表示处于安静状态，常作状语。
He sat in quietness, contemplating the stars.
他静静地坐着，凝望星空。
Not this
There was a quietness in the room.
Use this
There was quietness in the room.
quietness 是不可数名词，不能与不定冠词 a 连用。去掉 a 即为正确。
Not this
He is quietness.
Use this
He is quiet.
quietness 是名词，不能用作形容词来描述人的状态。应用形容词 quiet 代替。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
打破寂静
A sudden knock broke the quietness of the library.
突然的敲门声打破了图书馆的寂静。
享受宁静
I went to the countryside to enjoy the quietness.
我去了乡下享受宁静。
片刻的宁静
He paused for a moment of quietness before answering.
回答前，他停下来享受了片刻的宁静。
夜的寂静
She likes the quietness of the night for studying.
她喜欢在夜的寂静中学习。
心灵的宁静
Meditation helps her find quietness of mind.
冥想帮助她找到心灵的宁静。
在平静与信靠中，你们必得力量。
This line from Isaiah 30:15 in the King James Version of the Bible is widely quoted to encourage calm, trusting composure rather than anxious striving.
这句出自钦定版圣经以赛亚书30:15的名言，常被引用以鼓励人保持平静信靠的沉着，而非焦虑挣扎。
Use quietness naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
quiet（安静）+ ness（名词后缀）→ 寂静的状态；想象深夜图书馆里一片安静。
语域：mixed 常见场景：written description、everyday speech quietness 多用于书面或文学描写，表示“安静、宁静”的状态；日常口语中更常说 quiet。正式或描述性语境中比较常见。
不可数名词，表示状态或性质
Dictionary facts from ECDICT, WIKTIONARY.