Question

concentration n.集中；专心；浓度 (1) 网球运动员在比赛中需要全神贯注。(2) 紧张和疲劳常使人精神不集中。(3) 如果你想把事情做好,专心是必要的。(4) 他专心研究经济学。(5) 用折射仪测量一下氧气的浓度。(6) 钛只在低浓度时起作用。 A concentration of people means that there are many of them in one area. Your city may have a concentration of artists living in the warehouses by the river. A high concentration of a substance in a solution means that there's a lot of it relative to the volume: the Great Salt Lake has very few fish because of the high concentration of salt. To say that you have good concentration skills means that you pay attention well.

Accepted Answer

英 [ˌkɒnsen'treɪʃən] 美 [ˌkɒnsen'treɪʃən] (1) The tennis players need total concentration during play.(2) Stress and tiredness often result in a lack of concentration.(3) Concentration is essential if you want to do a good job.(4) His area of concentration is economics.(5) Check oxygen concentration by a refractometer.(6) Titanium is useful at low concentration only. If you have great powers of concentration, that means you're able to focus all your attention on the matter at hand. Concentration can also refer to something that's clustered together or to the density or strength of a solution. 1[N-UNCOUNT 不可数名词]全神贯注；专心；专注 Concentration on something involves giving all your attention to it. Neal kept interrupting, breaking my concentration...尼尔不停地打断我，使得我无法集中注意力。We lacked concentration and it cost us the goal and the game.我们注意力不够集中，结果丢了球，输了比赛。2[N-VAR 可变名词]集中；汇集 A concentration of something is a large amount of it or large numbers of it in a small area.   [usu N of n]The area has one of the world's greatest concentrations of wildlife...这个地区是世界上野生动物最为密集的区域之一。There's been too much concentration of power in the hands of central authorities.权力一直过多地集中在中央机构手中。3[N-VAR 可变名词]浓度 The concentration of a substance is the proportion of essential ingredients or substances in it.   [with supp]pH is a measure of the concentration of free hydrogen atoms in a solution...pH值是测试溶液中自由氢原子浓度的单位。The latest data showed that global ozone concentrations had dropped several per cent over the last decade.最新数据显示，过去10年来全球臭氧的浓度降低了几个百分点。

英语单词	concentration
英美音标	英 [ˌkɒnsen'treɪʃən] 美 [ˌkɒnsen'treɪʃən]
中文释义	n.集中；专心；浓度
英语例句	(1) The tennis players need total concentration during play. (2) Stress and tiredness often result in a lack of concentration. (3) Concentration is essential if you want to do a good job. (4) His area of concentration is economics. (5) Check oxygen concentration by a refractometer. (6) Titanium is useful at low concentration only.
中文例句	(1) 网球运动员在比赛中需要全神贯注。 (2) 紧张和疲劳常使人精神不集中。 (3) 如果你想把事情做好,专心是必要的。 (4) 他专心研究经济学。 (5) 用折射仪测量一下氧气的浓度。 (6) 钛只在低浓度时起作用。
vocabulary简明	If you have great powers of concentration, that means you're able to focus all your attention on the matter at hand. Concentration can also refer to something that's clustered together or to the density or strength of a solution.
vocabulary扩展	A concentration of people means that there are many of them in one area. Your city may have a concentration of artists living in the warehouses by the river. A high concentration of a substance in a solution means that there's a lot of it relative to the volume: the Great Salt Lake has very few fish because of the high concentration of salt. To say that you have good concentration skills means that you pay attention well.
柯林斯解释	1 [N-UNCOUNT 不可数名词]全神贯注；专心；专注 Concentration on something involves giving all your attention to it. Neal kept interrupting, breaking my concentration... 尼尔不停地打断我，使得我无法集中注意力。 We lacked concentration and it cost us the goal and the game. 我们注意力不够集中，结果丢了球，输了比赛。 2 [N-VAR 可变名词]集中；汇集 A concentration of something is a large amount of it or large numbers of it in a small area. [usu N of n] The area has one of the world's greatest concentrations of wildlife... 这个地区是世界上野生动物最为密集的区域之一。 There's been too much concentration of power in the hands of central authorities. 权力一直过多地集中在中央机构手中。 3 [N-VAR 可变名词]浓度 The concentration of a substance is the proportion of essential ingredients or substances in it. [with supp] pH is a measure of the concentration of free hydrogen atoms in a solution... pH值是测试溶液中自由氢原子浓度的单位。 The latest data showed that global ozone concentrations had dropped several per cent over the last decade. 最新数据显示，过去10年来全球臭氧的浓度降低了几个百分点。

Concentration Means Attention Essential Good Area Great High