VOA慢速英语:Improve Your Long-Term Memory by Spacing Practice

cognitive – n. of, relating to, or involving mental activities (such as thinking, understanding, learning, and remembering)

session – n. a period of time that is used to perform activity

interleave – v. to organize in or as if in alternative or different levels

practice – n. an actual performance; a systemic exercise; the way of doing something

occasionally – adj. rarely; not very often

digital – adj. of or related to computer technology

deck – n. a set of playing cards

strategy – n. a careful method or plan

retention – n. the act of retaining; something retrained

discouraged – adj. feeling less determined, hopeful, or confident