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be in disrepair
disrepair 为不可数名词，常与 in 搭配，表示处于失修状态。
The old school building is in disrepair.
这栋旧校舍处于失修状态。
失修；破损
先理解核心含义，再看它在真实句子里的用法。
失修；破损
in need of repairs
The old school building is in disrepair.
这栋旧校舍处于失修状态。
状况不佳、需要维修的状态。
The state of being in poor condition, in need of repair.
需要修理
in need of repairs
The old house had fallen into disrepair after years of neglect.
那座老房子因多年无人照管而失修了。
The bridge was in a state of disrepair and needed urgent repairs.
这座桥处于失修状态，需要紧急维修。
Years of budget cuts left the public library in disrepair.
多年的预算削减使公共图书馆处于失修状态。
disrepair 为不可数名词，常与 in 搭配，表示处于失修状态。
The old school building is in disrepair.
这栋旧校舍处于失修状态。
fall into disrepair 强调逐渐变得失修，常用完成时。
Many historic houses have fallen into disrepair.
许多历史房屋已经失修。
Not this
The old house is disrepair.
Use this
The old house is in disrepair.
disrepair 是名词，不能直接作表语；表示“处于失修状态”需要用介词短语 in disrepair，所以应加上 in。
Not this
The building fell to disrepair.
Use this
The building fell into disrepair.
固定搭配是 fall into disrepair（陷入失修状态），介词要用 into 而不是 to；把 to 换成 into 即为正确表达。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
年久失修；逐渐破损
The castle fell into disrepair after the family moved away.
城堡在家人搬走后年久失修。
处于失修状态
The roof is in disrepair and leaks whenever it rains.
屋顶破损失修，一下雨就漏水。
失修状态
Years of neglect left the house in a state of disrepair.
多年的荒废使这所房子处于失修状态。
仍处于失修状态
The theater remained in disrepair until the city funded its renovation.
剧院一直处于失修状态，直到市政府出资翻新。
陷入失修状态；年久失修
The old theater fell into disrepair after it closed down.
老剧院关门后年久失修。
使某物失修；让……年久失修
Budget cuts left the city's roads in disrepair.
预算削减使城市的道路失修。
处于失修状态；残破不堪
The public library is in a state of disrepair and needs urgent renovation.
公共图书馆残破不堪，急需翻修。
Use disrepair naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆成dis（不）＋ repair（修理），长期不修理，房屋自然就“失修破损”。
语域：formal 常见场景：building maintenance reports、infrastructure news、property descriptions disrepair 比较常见于正式或书面语境，多用于描述建筑、道路等因维护不善而破损的状态；搭配 fall into disrepair 很常见，口语中使用时也显得比较正式。
与 disrepair (/ˌdɪsrɪˈpɛr/) 同韵的词有 repair、despair、impair、compare，均含 /pɛr/；air、fair 为 /ɛr/，也押韵。注意形似的 disappear (/ˌdɪsəˈpɪr/) 发音为 /pɪr/，与 disrepair 不同，不要混淆。
Dictionary facts from ECDICT, WIKTIONARY.