What do the twilight book covers mean?

twilight as an apple help in two hands, eclipse has a ribbon which is broken in between.. and so on. i've read the books and watched the movies, but I don't get what the cover illustrations mean. I am a BIG twilight saga fan and would really want to know. thanks for any help! :)
Asked Jun 17, 2011
Answered Jun 17, 2011

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