concentration

concentration

形容词含义：

1. 集中的；专心致志的；全神贯注的
2. 浓缩的；浓缩度高的
3. 密集的；聚集的

名词含义：

1. 集中；聚集
2. 专心；专注
3. 浓度；浓缩度

词语辨析：

concentration和focus都表示注意力集中的状态，但concentration更强调强度高、全神贯注，而focus更偏向于目标、中心；concentration强调物质的浓度或密集程度，而density强调物质的密集程度。

词汇扩充：

1. attention concentration: 注意力集中
2. mental concentration: 精神集中
3. concentration camp: 集中营
4. concentration gradient: 浓度梯度
5. concentration span: 注意力持续时间
6. concentration level: 浓度水平

近义词：

focus, attention, absorption, immersion, engrossment

反义词：

distraction, dispersion, scattering, diffusion

柯林斯词典解释：

名词

1. The concentration of a substance is the amount of it that is present in a particular liquid or gas.
2. If you say that a concentration of something somewhere is high or low, you mean that there is a lot of it or very little of it in that place.
3. The concentration of a group of people or things is the fact that they are all in one place or are all doing the same thing.
4. If you say that someone has a concentration of a particular quality, you mean they have a lot of it.

形容词

1. Concentrated is used to describe a substance that has been made stronger or more pure by having water or other substances removed.
2. Concentrated is used to describe an activity or effort that is done with complete attention and is not interrupted by anything.

牛津词典解释：

名词

1. The action or power of focusing all one's attention.
2. The action of gathering together military forces.
3. The relative amount of a particular substance contained within a solution or mixture or in a particular volume of space.
4. The action or process of making something denser or more concentrated.

形容词

1. (of a substance) present in a high proportion relative to other substances; having had water or other diluting agent removed or reduced.
2. Intended to be diluted before use.

用法：

concentration作为名词和形容词使用。

中英双语例句：

1. Her concentration was so intense that she didn't hear me enter the room. 她全神贯注，以至于没有听见我进屋。
2. Children need to learn how to improve their powers of concentration. 孩子们需要学习如何提高他们的注意力。
3. A high concentration of carbon dioxide in the atmosphere contributes to global warming. 大气中高浓度的二氧化碳加剧了全球变暖。
4. The concentration of power in the hands of a few individuals can be dangerous. 权力集中在少数人手中是危险的。
5. The company produces a range of concentrated cleaning products. 这家公司生产各种浓缩型清洁产品。
6. You should dilute the concentrated juice with water before drinking it. 饮用之前，你应该用水稀释浓缩果汁。
7. During meditation, she achieves a deep state of concentration. 在冥想中，她达到了一种深度的集中状态。
8. The concentration of troops along the border indicates a potential conflict. 沿着边境的兵力集中表明可能会发生冲突。
9. The concentration of wealth in the hands of a few individuals is a concern. 财富在少数人手中的集中是一个问题。
10. He has a high concentration of talent in the field of music. 他在音乐领域有很高的才华积聚。
11. The concentration of students in the library increased during exam week. 在考试周，图书馆里的学生集中度增加了。
12. The concentration of resources in urban areas often leads to rural neglect. 资源在城市地区的集中往往导致农村的忽视。
13. The concentration of power in the hands of a dictator can lead to oppression. 权力集中在独裁者手中会导致压迫。
14. The concentration of sugar in the solution is too high. 溶液中的糖浓度太高。
15. The concentration of effort on this project has been remarkable. 对这个项目的集中努力令人瞩目。
16. The concentration of factories in this area has led to increased pollution. 这个地区工厂的集中导致了污染的增加。
17. He needs complete silence to maintain his concentration while studying. 他需要完全的安静才能在学习时保持注意力。
18. The lack of concentration during the test led to poor results. 考试时注意力不集中导致了糟糕的结果。
19. Her concentration on her work made her oblivious to the noise around her. 她专注于工作，对周围的噪音毫不在意。
20. The concentration of students in the cafeteria made it difficult to find a seat. 餐厅里学生的聚集使得很难找到一个座位。