36 concentrated                   

    37 information                          

    38 depends                               

    39 straight  

    40 row            

    41 suspected    

    42 phenomenon (現(xiàn)象)           

    43 efficiently

    44  our second rule of learning is this: it is better to study fairly briefly but often.

    45  Let's say you are trying to learn some new and rather difficult English vocabulary using a stack of cards.

    46  The answer is it is better to space out the presentations of the word you are to learn.