I love politics but I am not so obsessional about it that it's the only thing I want to do.我热爱政治, 但并没有执着到只想做这一件事。

Mary was obsessional about housework.玛丽过于喜欢做家务。

She became almost obsessional about the way she looked.她近乎偏执地关注自己的外表。