closed

中英词典：closed

形容词：

1. 封闭的；关闭的

形容某物被关闭或封闭。

例句：

1. The door is closed.（门被关闭了。）
2. The store is closed for renovation.（商店因翻新而关闭。）

2. 不开放的；不对外的

形容某物不对外开放或不对公众开放。

例句：

3. This is a closed event and only invited guests are allowed.（这是一个不对外开放的活动，只允许受邀嘉宾参加。）
4. The meeting is closed to the press.（会议对媒体不开放。）

3. 闭塞的；不通的

指道路、通道或管道被堵塞，不通行或流通。

例句：

5. The road is closed due to heavy snow.（由于大雪，道路封闭。）
6. The pipeline is closed for repairs.（管道因维修而关闭。）

4. （眼睛）闭合的；不开的

形容眼睛的状态为闭合或不开放。

例句：

7. Keep your eyes closed during the eye exam.（在眼科检查期间，请闭上眼睛。）
8. His eyes remained closed as he drifted off to sleep.（他入睡时，双眼紧闭。）

5. 保密的；不公开的

形容某事保密或不公开。

例句：

9. The details of the negotiation are closed.（谈判的细节保密。）
10. The closed nature of the investigation has led to speculation.（调查的不公开性引发了猜测。）

名词：

1. 关闭；封闭

指某物被关闭或封闭的状态。

例句：

1. Make sure the closure is secure.（确保封闭物是牢固的。）
2. The closure of the factory resulted in job losses.（工厂的关闭导致失业。）

2. 闭幕式

指一场活动或表演的结束部分，通常有庆祝或致辞。

例句：

3. The concert ended with a spectacular closing.（音乐会以壮观的闭幕结束。）
4. The closing of the Olympic Games was a grand ceremony.（奥运会的闭幕式是一场盛大的仪式。）

词语辨析：

closed与close的区别在于closed是closed的过去分词形式，是形容词，而close是动词，可以表示“关闭”或“结束”的动作。

词汇扩充：

1. closed circuit（闭路）

指电流或信息在一个连续的环路中流动的系统。

例句：

1. The surveillance cameras operate on a closed circuit.（监控摄像头运行在闭路系统上。）
2. We watched the live feed on a closed circuit television.（我们在闭路电视上观看了实况转播。）

2. closed system（封闭系统）

指在系统内部没有物质的进出，只有能量交换的系统。

例句：

3. A sealed jar can create a closed system.（密封的罐子可以形成封闭系统。）
4. Scientists are studying the behavior of a closed system.（科学家正在研究封闭系统的行为。）

近义词：

sealed, shut, blocked, inaccessible, private

反义词：

open, accessible, public

柯林斯词典解释：

形容词：

1. Something that is closed has been shut, either completely or partially.

2. If a shop or office is closed, it is not open for business at the time when you might expect it to be.

3. A closed group of people does not welcome new people or ideas from outside.

4. In a closed society or system, people have little contact with other people.

名词：

1. The closure of a place such as a factory, store, or school is the permanent ending of the work or activity there.

2. The closing of a place such as a road or border is the act of preventing people from entering it or using it.

牛津词典解释：

形容词：

1. Not open or available to the public.

2. Not allowing for any possibility of misunderstanding; unambiguous.

3. (of a company) not having shares offered for public sale.

4. (of a question) not allowing for any debate or discussion.

名词：

1. The act or process of closing something.

2. The end of an activity, event, or period of time.

用法：

1. The store is closed on Sundays.（这家商店星期天不营业。）

2. The closed meeting is for board members only.（这个不对外的会议只针对董事会成员。）

3. The closed nature of the negotiations made it difficult to reach an agreement.（谈判的不公开性使得达成协议很困难。）

4. The closure of the factory resulted in many job losses.（工厂的关闭导致许多人失业。）