concentrate的固定搭配为concentrate at/in/on sth/ doing sth，意为聚精会神做某事。英文单词concentrate可作名词和动词两种词性，基本含义有“集中注意力”、“使…集中”、“使浓缩”、“浓缩物”等。
concentrate的基本含义及用法介绍
1、作为动词时，意为集中(注意力);聚精会神;使…集中(或集合、聚集);(使)浓缩。
例句：I can't concentrate with all that noise going on.
吵闹声不绝于耳，我无法集中精神。
Power is largely concentrated in the hands of a small elite.
权力主要集中在少数精英人物的手里。
It was up to him to concentrate on his studies and make something of himself...
是否能专心学习并取得一定成就要靠他自己。
Italy's industrial districts are concentrated in its north-central and north-eastern regions...
意大利的工业区集中在该国中北部和东北部地区。
The possibility of entering into and losing such a match should concentrate the minds of computer scientists ．
参加并输掉这样一场比赛的可能性应该使计算机科学家们集中精力。
Sweeten dishes sparingly with honey, or concentrated apple or pear juice.
加一点蜂蜜或浓缩苹果汁或梨汁，让菜带点甜味。
It is difficult to make oneself concentrate for long periods.
让自己长时间聚精会神是很困难的。
He would do well to concentrate more on his work.
他最好还是更加集中精力在工作上。
2、作为名词时，意为浓缩物。
例句：The concentrate delivery system employs a positive displacement pump.
浓缩物递送系统采用正位移泵。
Preparation and application of provitamin concentrate from pine needles
松针维生素原浓缩物的研制和应用
