No doubt all kinds of electronic devices suggested by other C-hing are all ok.
However our brain's memory is the final backup. Therefore, we should keep our brain clear and clean, sometimes need refresh our memory on all the activities and images we came across.
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發表於 2014-2-22 15:00
. Therefore, we should keep our brain clear and clean, sometimes need refresh our memory on all the activities and images we came across.
