con‧cen‧tra‧tion S3 W2 AC / kɒns ə ntreɪʃ ə n $ kɑn- / 名词

1 [不可数名词] the ability to think about something carefully or for a long time → concentrate :

She needed all her powers of concentration to stop herself from slipping on the icy road.

Lack of concentration was a real problem.

I lost my concentration and fell asleep.

2 [不可数名词] a process in which you put a lot of attention, energy etc into a particular activity → concentrate

concentration on (doing) something

concentration on your health

concentration on providing value and service

3 [可数和不可数名词] a large amount of something in a particular place or among particular people → concentrate

concentration of

the concentration of greenhouse gases in the atmosphere

the concentration of power in the hands of a few

4 [可数名词] technical the amount of a substance contained in a liquid → concentrate

high/low concentrations

Additives are expensive but are used in very low concentrations.

concentration of

allowable concentrations of pesticides in drinking water

COLLOCATIONS

动词

something takes concentration (= needs concentration ) Playing a musical instrument takes a lot of concentration.

something requires/demands concentration formal Writing an exam requires great concentration.

lose (your) concentration Halfway through the game, he seemed to lose concentration.

break sb’s concentration (= stop someone concentrating ) The telephone rang and broke my concentration.

disturb sb’s concentration She slipped out of the room, trying not to disturb his concentration.

短语

sb’s powers of concentration (= sb’s ability to concentrate hard ) Great athletes are known for their powers of concentration.

a lack of concentration A lack of concentration when you are driving can be fatal.

a lapse in/of concentration (= a short time when you do not concentrate ) That brief lapse of concentration resulted in a goal for the other team.

形容词

great/deep concentration My work demands great concentration.

poor concentration The boy had behavioural problems and suffered from poor concentration.

total concentration I was impressed by her total concentration on the game.

intense concentration (= very great concentration ) The job demands intense concentration.

concentration + NOUN

a concentration span (= the length of time that you are able to concentrate ) Young children have a short concentration span.