Word · CEFR A1 · Frequency #403
open
开着的；敞开的
not closed; allowing passage or view
- 1.
Physically unobstructed, uncovered, etc.
物理上没有障碍,未覆盖等
- 2.
Able to be used or interacted with in some way.
可以使用或互动
- 3.
Not hidden or restricted.
不隐藏或不受限制
- 4.
Not completed or finalised.
未完成或未最终确定
- 5.
Having a free variable.
具有自由变量
- 6.
Which is part of a predefined collection of subsets of X, that defines a topological space on X.
属于定义X的拓扑空间的预定义子集集合的一部分
- 7.
Of a note, played without pressing the string against the fingerboard.
音符在演奏时不按弦板
- 8.
Of a note, played without closing any finger-hole, key or valve.
音符在演奏时不闭合任何指孔、键或阀
- 9.
Uttered with a relatively wide opening of the articulating organs; said of vowels.
发音时发音器官相对张开；指元音
- 10.
Uttered, as a consonant, with the oral passage simply narrowed without closure.
辅音发音时,口腔通道仅缩小而不闭合
- 11.
Source code of a computer program that is not within the text of a macro being generated.
计算机程序的源代码不在生成的宏文本中
- 12.
Having component words separated by spaces, as opposed to being joined together or hyphenated; for example, time slot as opposed to timeslot or time-slot.
由空格分隔的组成词,而不是连在一起或用连字符连接；例如,time slot 而不是 timeslot 或 time-slot
营业的；可使用的；开放的；公开的；不受限制的；悬而未决的；未定的；分写的；空格分隔的；不按弦的；不闭孔的；开放的
In use
The window is open, so fresh air can come in.
I left the door open so the cat could come inside.
The library is open until 8 p.m., so we can study there tonight.
Connections
Collocations
- open door
- 开着的门；敞开的门
- Please keep the door open so the cat can come in.请让门开着,这样猫就能进来。
- open to the public
- 向公众开放
- The new swimming pool is open to the public all year round.新游泳池全年向公众开放。
- open question
- 悬而未决的问题
- The exact cause of the fire is still an open question.火灾的确切原因仍然是一个悬而未决的问题。
- open to suggestions
- 乐于听取建议
- I am open to suggestions if you have any.如果你有什么建议,我愿意听取。
- open secret
- 公开的秘密
- It is an open secret that they are planning to merge.他们正在计划合并,这已是公开的秘密。
- open air
Learner notes
Memory Tip
open 的 o 像张开的嘴，pen 像张开的笔尖，看到它们就记住“张开、敞开”的意思。
Context & Register
语域：neutral 常见场景：日常生活、商店或场所门口、书面描述 open 作形容词时含义较多，但多用于描述门、窗、容器等未关闭或未覆盖的状态，也常表示商店等场所开始营业；语气中性，口语和书面语都比较常见。具体含义需根据搭配来判断。
Grammar Note
作形容词时，常接介词to表示‘对…开放’，接about表示‘坦诚的’，接with表示‘对…坦诚’。
Pronunciation & Spelling
Only reopen is a true rhyme with open. Hope, rope, and cope share the -ope spelling and the /oʊp/ sound, but they lack the final /ən/ syllable. Broken shares the -o-en spelling pattern but has /kən/ rather than /pən/. Oven looks similar in spelling but is pronounced /ˈʌvən/, not /ˈoʊpən/.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 5，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.