1
throughout + time period
表示在整个时间段内，强调持续贯穿
The office is open throughout the year.
办公室全年开放。
自始至终
先理解核心含义，再看它在真实句子里的用法。
自始至终
from first to last
The office is open throughout the year.
办公室全年开放。
在每个部分；贯穿
In every part of; all through.
The company has offices throughout the country.
该公司在全国各地都有办事处。
Wildflowers grow throughout the valley in spring.
春天，野花遍布整个山谷。
We searched throughout the house but found nothing.
我们搜遍了整个房子，但什么也没找到。
表示在整个时间段内，强调持续贯穿
The office is open throughout the year.
办公室全年开放。
表示遍及整个区域
The disease spread throughout the country.
疾病蔓延至全国。
Not this
She worked throughout.
Use this
She worked throughout the day.
throughout作介词时后需接名词或名词短语表示时间或空间范围，不能单独使用作副词表达'一直'。
Not this
Throughout of the year, the company grew.
Use this
Throughout the year, the company grew.
throughout本身就是介词，后面直接跟名词，不需要再加of。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
遍及全世界
This tradition is celebrated throughout the world.
这个传统遍及全世界。
纵观历史
Throughout history, humans have sought knowledge.
纵观历史，人类一直追求知识。
一整天
She remained energetic throughout the day.
她一整天都精力充沛。
全年
The school is open throughout the year.
这所学校全年开放。
在整个过程中
We will support you throughout the process.
我们会在整个过程中支持你。
遍及全国
The new policy was implemented throughout the country.
新政策已在全国实施。
一整天
She worked throughout the day to finish the project.
她工作了一整天来完成这个项目。
全世界
This tradition is celebrated throughout the world.
这个传统在世界各地都会庆祝。
纵观历史
Throughout history, humans have sought knowledge.
纵观历史，人类一直在寻求知识。
在整个人类历史中，我们都依赖机器生存。
From the movie 'The Matrix' (1999), spoken by Agent Smith.
出自电影《黑客帝国》（1999年），由特工史密斯说出。
Use throughout naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
through（穿过） + out（出） → 自始至终，遍及各处
通常用于表示时间或空间的贯穿，在书面语和口语中都常见，语气中立。
用于名词或名词短语前，表示在整个期间或范围内
Dictionary facts from ECDICT, WIKTIONARY.