1、element
成分;组成部分
The exchange of prisoners of war was one of the key elements of the UN's peace plan.
交换战俘是联合国和平计划的一个重要部分。
要素;基本部分
Fitness has now become an important element in our lives.
现在健康已经成为我们生活中的一个要素。
(社会或组织内部具有相同目标、信仰或习惯的)一群人,一组人,分子
criminal elements within the security forces.
安保部队中的犯罪分子
the hooligan element.
流氓团伙
2、concentrate
全神贯注;集中(心思)
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。
Water companies should concentrate on reducing waste instead of building new reservoirs.
自来水公司应该集中精力减少水浪费,而不是修建新水库。
使集中;使汇集
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。
Most development has been concentrated in and around cities.
土地开发主要集中在城市及周边地区。