Can i play dragon age 2 without playing awakening?

i have played dragon age origins, but wanted to play dragon age 2. is there a plot line that continues through the expansion, or spoilers, or something that might ruin playing awakening after 2Can i play dragon age 2 without playing awakening?
Awakening will give you some extra background for the things that happen in DA2. For example you first meet Anders in Awakening, he's also a companion in DA2. It's not necessary to play it first though. You will still understand the game and most of the plot of Awakening won't be spoiled.

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