concentration

释义

n. 集中, 专心\n[化] 浓度; 浓缩 concentration of sth 集中；聚集 high concentration 高浓度，高强度 stress concentration 应力集中

例句

She needed all her powers of concentration to stop herself from slipping on the icy road.

她需要集中全部注意力才能不让自己在结冰的路上滑倒。

Lack of concentration was a real problem.

注意力不集中是个大问题。