Answers

2014-12-05T16:14:55+08:00
It is something that is difficult to understand. it might be  perceived in different ways depending on how the person understands such thing 
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2014-12-07T10:36:50+08:00
Abstract is  a concept or term that does not refer to a concrete object but denotes a quality, emotion, or idea, it couldn't touch, seen, but you can feel it.


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