他漫无目的地浏览着杂志，没有特别想看的内容。

He flipped through the magazine in a ___desultory manner, not looking for anything in particular.

他的演讲内容很散乱，从一个话题跳到另一个话题，毫无关联。

His speech was ___desultory, shifting from one topic to another without any connection.