[] a lot of sth in one place集中；聚集◆ insurance premiums for commercial buildings with high concentrations of visitors or workers 为游客或工人很集中的商业大厦投保的保费◆This area has the highest concentration of industry in the country.这是国内工业集中程度最高的地区。 [] the act of bringing things together, or of coming together, to form a group集中◆ Concentration of investments in a single company's shares was foolish.集中投资于一家公司的股票是愚蠢的。◆There is concern about the concentration of ownership in the regional press (= a small number of people or groups own most of the newspapers).地方报刊所有权的集中令人关注。 [] the ability to direct all your effort and attention on one thing, without thinking of other things专心；专注◆The job demands total concentration.这工作需要全神贯注。 [] the process of people directing effort and attention on a particular thing关注；重视◆Their concentration on developing new markets is starting to bring profits.他们重视开发新市场的做法正开始给公司带来利润。buyer concentration market concentration