Neal kept interrupting, breaking my concentration.

尼尔不断打扰，使得我不能集中注意力。

The area has one of the world's greatest concentrations of wildlife.

该地区有世界上野生生物最集中的区域之一。

There's been too much concentration of power in the hands of central authorities.

过去中央政府手中的权力过于集中。

pH is a measure of the concentration of free hydrogen atoms in a solution.

pH值是溶液中游离氢原子浓度的计量单位。

Global ozone concentrations had dropped over the last decade.

在过去十年中全球范围的臭氧浓度下降了。