jejune

她提出的解决方案太过天真，显示出她对问题缺乏深刻理解。

Her ___jejune solution to the problem showed her lack of deeper understanding.

这本小说情节单调乏味，读了几页我就放弃了。

The novel's plot was so ___jejune that I gave up after a few pages.

客座讲师的演示内容太过枯燥乏味，放到第二张幻灯片时一半听众已经睡着了。

The guest lecturer's presentation was so ___jejune that half the audience had dozed off by the second slide.