名词浓缩物动词聚精会神；集中（注意力）；使…集中（或集合、聚集）；（使）浓缩网络专心；全神贯注；精矿
及物动词
1.
1. Our population is concentrated in the big cities.
我国人口集中在大城市里。
2. Industrial development is being concentrated in the west of the country.
这个国家的西部正集中发展工业。
3. Concentrate on your work.
集中精神工作。
不及物动词
1. She couldn't concentrate on a book very long.
她不能长时间专心读一本书。
2. You should concentrate on your work.
你应该专心于你的工作。