to buy on a whim - to buy without planning, a part of the equation - an important factor, go the extra mile - do your best, take a crack at - try, to get the ball rolling - to start, deliberate on it - think about it carefully, exacerbate the problem - make the problem worse, of paramount importance - very important, ambivalent - not sure, elucidate - explain clearly, resolve the issue - solve the problem, readily apparent - easy to see, a compelling case in point - a good example,

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