concentration

/ˌkɒnsnˈtreɪʃn/ (bre, ipa) · /ˌkɑːnsnˈtreɪʃn/ (ame, ipa) · /ˌkän(t)-sən-ˈtrā-shən -ˌsen-/ (ame, mw)

concentration — noun

  • concentrationsingular
  • concentrationsplural

1. the mental power to keep your full attention on one task, activity, or idea whil

1.名詞B1
釋義

the mental power to keep your full attention on one task, activity, or idea while ignoring anything else around you

例句

Tyler lost his concentration when the loud music started playing next door.

lose + concentration — breaking off focus

A quiet room helps Devika maintain her concentration while studying for exams.

maintain + concentration — keeping focus

同義詞
  • focus

    very similar; focus can be shorter-term and more goal-directed, while concentration suggests sustained effort

  • attention

    broader and can be involuntary; 'pay attention' is less effortful than 'concentrate'

  • immersion

    stronger level of involvement, often implying enjoyment or losing track of time

反義詞

文法句型

concentration + on + noun/gerund

lose/maintain/require + concentration

用法筆記

Often paired with verbs like lose, break, maintain, or require. Commonly modified by deep, intense, complete, or total.

常見錯誤

❌I need more concentration power to finish this work.
✅I need to concentrate better to finish this work.
💡'concentration' already means mental focus; 'concentration power' is redundant.
❌I lost my concentration to the noise.
✅I lost my concentration because of the noise.
💡use 'because of' or 'due to' for the cause, not 'to'.

2. a situation in which many things or people are gathered together in one area rat

2.名詞B1
釋義

a situation in which many things or people are gathered together in one area rather than spread out

例句

There is a high concentration of coffee shops in the city center.

high concentration of [things] in [place]

The concentration of wealth in a few families bothers many citizens.

同義詞
  • cluster

    a small, close group; more specific than concentration

  • gathering

    emphasizes people coming together; less natural for objects

反義詞

文法句型

concentration + of + plural noun

high/low + concentration + of + noun

用法筆記

Commonly used with high or low followed by concentration of + noun. The subject or location is typically a place or region where things cluster.

常見錯誤

❌There is a high concentration of population in Taipei.
✅There is a high population density in Taipei.
💡'concentration of population' is less natural; use 'population density' for describing how crowded a place is.

3. a measurement showing how much of one chemical or material is contained within a

3.名詞B2
釋義

a measurement showing how much of one chemical or material is contained within a liquid, gas, or solid mixture, typically given as a percentage or ratio

例句

The doctor checked the alcohol concentration in her blood after the accident.

Farmers prefer this fertilizer because it offers a high concentration of nitrogen.

high concentration of [substance] in [product]

同義詞
  • density

    mass per unit volume; broader than concentration, which specifies one substance in a mixture

  • strength

    informal alternative; less precise than concentration

反義詞
  • dilution

    the process of making a substance less concentrated by adding more liquid

文法句型

concentration + of + substance + in + medium

high/low/safe/lethal + concentration

用法筆記

Typically used with measurable adjectives (high, low, safe, lethal, maximum). Very common in scientific, medical, and environmental contexts. Can be expressed in units such as percentages, parts per million (ppm), or grams per liter (g/L).

常見錯誤

❌The concentration of sugar is very strong in this drink.
✅The concentration of sugar is very high in this drink.
💡use 'high' or 'low' for concentration, not 'strong' or 'weak' (though 'strong' is heard informally).

4. a card-matching game in which each player flips a pair of cards face-up on their

4.名詞A2
釋義

a card-matching game in which each player flips a pair of cards face-up on their turn, using their memory to find matching images and collect the most pairs

例句

The children spent the whole afternoon playing Concentration with animal cards.

play + Concentration (card game)

Niran won three rounds of Concentration by remembering where each picture was.

同義詞
  • Memory

    the most common alternative name for the same game

  • Pelmanism

    a more formal or older name for the matching-card game

文法句型

play + Concentration

a game of + Concentration

用法筆記

Often capitalized as a proper noun when referring to the game by name. Also known as Memory, Match Match, or Pelmanism. Common as a children's educational game.