求翻译：1.注意集中。记忆时只要聚精会神、专心致志，排除杂念和外界干扰，大脑皮层就会留下深刻的记忆痕迹而不易遗忘。如果精神涣散，一心二用，就会大大降低记忆效率。是什么意思？

(1) focus attention on. Memory when you concentrate, concentrate, eliminate distractions and outside interference, the cerebral cortex will be left a deep memory traces which are not easily forgotten. If the spirit of slack, with one mind, will greatly reduce the efficiency of memory.

1. attention centralisms.When memory so long as with total concentration, wholly absorbed, but removes the distracting thoughts and the external interference, the cerebral cortex can leave behind the profound memory trace not easy to forget.If the spirit is lax, keeps one eye on, can reduce the memo

1. takes note of set. When memories as long as focus, dedication, removing distracting thoughts and outside interference, the cerebral cortex will leave a deep trace memory and not easily forgotten. If the distraction, one second, it would greatly reduce the memory efficiency.