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concentration
2 ENTRIES FOUND:
Learner's definition of CONCENTRATION
1
[noncount] : the ability to give your attention or thought to a single object or activity : the ability to concentrate专心；专注
- the power of concentration专注力
- All that noise is disturbing my concentration.所有那些噪声都在分散我的注意力。
- The job required her full concentration.这项工作需要她全神贯注。
- When you're tired it's easy to lose your concentration.人疲倦时容易失去专注力。
2
: the act of giving your attention to a single object or activity注意；关注
[singular]
- There was a concentration on ethics within the agency.这个机构注重内部道德规范。
- His concentration [=focus] was on gathering evidence for the trial.他的精力都用在了为审判收集证据上。
[noncount]
- a student who chose law as his field/area of concentration [=his main area of study]选择法律作为主要研究领域的学生
3
a : a large amount of something in one place（某物的）集中，聚集
[count]
- There is a concentration of wealth in the cities.城市里聚集了大量的财富。
[noncount]
- He objects to the concentration of power in the hands of a few rich men.他反对把权力集中在少数富人手中。
b [count] : a large number of people in one place（人的）聚集，聚居
- Officials are expecting a heavy/high concentration of tourists [=are expecting many tourists] for the festival.官方预计节日期间会有大量游客聚集。
4
[count] : the amount of an ingredient in a mixture浓度；含量
- Contaminants were found in low concentrations. [=amounts]污染物的浓度被证实很低。
- measuring the concentration of salt in a solution检测溶液中盐的浓度
- They detected high concentrations of pollutants in the water.他们检测到水中污染物的含量很高。
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