diffuse

教授的讲座内容太过散漫，让人难以抓住重点。

The professor's lecture was too ___diffuse to grasp the main points.

公司散漫的营销策略把资源摊得太薄，覆盖了几十个渠道。

The company's ___diffuse marketing strategy spread resources too thin across dozens of channels.

他散漫的回忆录在几十年间来回跳跃，缺乏一条主线。

His ___diffuse memoir jumps between decades without a unifying thread.