Tra từ concentration - Từ điển Oxford Advanced Learner 8th

con·cen·tra·tion AW [concentration concentrations] BrE [ˌkɒnsnˈtreɪʃn] NAmE [ˌkɑːnsnˈtreɪʃn] noun
1. uncountable the ability to direct all your effort and attention on one thing, without thinking of other things
• This book requires a great deal of concentration.
• Tiredness affects your powers of concentration.
2. uncountable ~ (on sth) the process of people directing effort and attention on a particular thing
•a need for greater concentration on environmental issues
• In his concentration on the job in hand, John allowed his normal vigilance to slip.
3. countable ~ (of sth) a lot of sth in one place
•a concentration of industry in the north of the country
4. countable, uncountable the amount of a substance in a liquid or in another substance
•glucose concentrations in the blood

Thesaurus:
concentration noun U
•The noise had disturbed his concentration.
attention • • care •
full/total/undivided concentration/attention
hold/focus sb's concentration/attention
turn your concentration/attention to sth

Example Bank:
•Don's voice from outside broke my concentration.
•Evaporation gradually increases the salt concentration of the water.
•One momentary lapse in concentration could prove fatal.
•She has great powers of concentration for a child her age.
•The concentration of nitrates in the drinking water has risen in recent years.
•The game requires great concentration.
•The greatest concentration of traffic is downtown.
•The greatest concentration of traffic is in the city centre.
•a look of total concentration on her face
•his concentration on his writing
•He stressed the need for greater concentration on environmental issues.
•The noise had disturbed his concentration.