【concentration音标】 英[ˌkɒnsnˈtreɪʃn] 美[ˌkɑ:nsnˈtreɪʃn]
【单词释义】 concentration是什么意思：
n.[C]集中；浓度；n.[U]专心；关注
[单词分级] 大学英语四级词汇
[单词复数] concentrations
【关联词/派生词】
concentrate v.专心于；集中
【concentration形近词/近似词】
illustration n.插图，图解；说明，例释
penetration n.穿透；渗透；进入；[军]突破
frustration n.挫折；失败；懊恼，沮丧；受阻，挫败
administration n.管理；实行；行政机关
【单词例句】
◇ "The waxy layers of produce hold on to pesticides and are very difficult to remove using water alone," he says. "Other agents are needed to effectively remove the waxy layers. However, peeling remains the most effective way to remove a large concentration of pesticides."
黎博士称：“农产品的蜡质层会附着农药，而且光是用水清洗很难去除，需要其他药剂来有效去除蜡质层。然而，削皮仍然是去除高浓度农药的最有效方法。”
---- How to washing your fruits and veggies
◇ They may spend a little more time in the stomach and empty more slowly compared to plain water, but once these beverages enter the small intestine their high concentration of sugars gets diluted during a physiological process called osmosis.
和白水相比，这些饮料也许在胃里停留的时间更长一点，排空速度更慢，但一旦这些饮料进入小肠，高浓度的糖就会在渗透作用（一种生理过程）下得到稀释。
---- Which drink is best for hydration? Hint: It isn't water