The study's subjects, a group of adolescent girls, underwent MRI scans before and after a three-month Tetris practice period.
此研究的对象是一组少女，分别在为期三个月的俄罗斯方块训练前后接受了核磁共振扫描。
The practice period should begin with repeating the idea for today, then closing your eyes and reviewing the unresolved questions whose outcomes are causing you concern.
练习开始时，先复诵一遍今天的观念，然后闭起眼睛，反省一下是否有悬而未决并且后果令你担心的问题。
However, if you do, the length of the practice period may be reduced to less than the minute or so that is otherwise recommended.
如果你心生排斥，练习的时间可以缩短，少于通常建议的一分钟。
However, if you do, the length of the practice period may be reduced to less than the minute or so that is otherwise recommended.
如果你心生排斥，练习的时间可以缩短，少于通常建议的一分钟。
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