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in its entirety
常与物主代词（如 its, his, her）连用，表示“作为整体、完整地”。
She read the book in its entirety.
她完整地读完了那本书。
整体；全部
先理解核心含义，再看它在真实句子里的用法。
整体；全部
the state of being total and complete
She read the book in its entirety.
她完整地读完了那本书。
整体；全部；完整
The whole; the complete or amount.
She read the book in its entirety over the weekend.
她周末把这本书完整地读完了。
The entirety of the class passed the final exam.
全班同学都通过了期末考试。
This folder contains the entirety of the project's documents.
这个文件夹里装着该项目全部的文件。
常与物主代词（如 its, his, her）连用，表示“作为整体、完整地”。
She read the book in its entirety.
她完整地读完了那本书。
较正式的说法，意为“……的全部”，后接名词或代词。
The entirety of the project was completed on time.
整个项目按时完成了。
Not this
She read the book in entire.
Use this
She read the book in its entirety.
entire 是形容词，不能直接用在介词 in 后面作宾语。表"整体地"应用固定搭配 in its entirety，其中 its 指代谈论的对象。
Not this
The entirety report is due tomorrow.
Use this
The entire report is due tomorrow.
entirety 是名词，不能放在名词前作定语修饰另一个名词。表"全部的"应用形容词 entire。
Not this
The committee reviewed the proposal in entirety.
Use this
The committee reviewed the proposal in its entirety.
固定搭配 in its entirety 必须带物主代词 its 来指代前文提及的事物，不能省略成 in entirety。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
完整地；作为整体
We watched the documentary in its entirety.
我们完整地看完了这部纪录片。
……的全部；整个……
The storm affected the entirety of the eastern coast.
暴风雨影响了整个东海岸。
在……的整个期间
She remained silent for the entirety of the meeting.
她在整个会议期间保持沉默。
通篇阅读；完整读一遍
You should read the contract in its entirety before signing.
签署之前你应该完整地读一遍合同。
完整地享受；从头到尾地欣赏
Listeners can now enjoy the album in its entirety online.
听众现在可以在网上完整地欣赏这张专辑。
整体；全部
He read the report in its entirety before making a decision.
他在做决定之前把报告完整地读了一遍。
……的全部
The entirety of the project was completed on time.
整个项目按时完成了。
在……的整个期间
She lived in Beijing for the entirety of her childhood.
她整个童年都住在北京。
Use entirety naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 entire（完整）和 ty（音近“体”）联想起来：完整的“体”就是整体。
语域：formal 常见场景：法律文书、正式报告、文学描述 “entirety” 通常用于正式或书面语境，表示“全部、整体”，如法律文件或正式报告中比较常见。日常口语里更常用 whole 或 all。
常作不可数名词，表示“全部、整体”；in its entirety 为常用固定搭配，表示“完整地、全部地”。
Dictionary facts from ECDICT, WIKTIONARY.