adj.太幼稚的，空洞的，枯燥无味的，不成熟的，头脑简单的，单调的

The jejune novel lacked depth and substance, making it difficult to connect with the characters.
这本肤浅的小说缺乏深度和内涵，让人难以与角色产生共鸣。
Her speech was jejune, repeating the same phrases over and over again.
她的演讲内容单调乏味，反复使用相同的短语。
The jejune decorations at the party seemed out of place in the grand hall.
派对上那些简陋的装饰在豪华的大厅里显得格格不入。
His writing style is jejune, relying heavily on clichés and superficial ideas.
他的写作风格过于稚嫩，充斥着陈词滥调和肤浅的观点。
The jejune plot of the children's book failed to capture their imagination.
儿童书的简单情节无法激发他们的想象力。
The jejune fashion trends from the 90s have resurfaced, surprising many.
上世纪90年代的过时时尚潮流竟然又流行起来，令人惊讶。
Her jejune enthusiasm for the project made others feel enthusiastic too.
她对项目的幼稚热情也感染了其他人。
The jejune athlete showed great promise despite his young age.
尽管年纪小，这位运动员展现出巨大的潜力。
The jejune artist's work lacked originality and creativity.
这位新手艺术家的作品缺乏原创性和创新性。
After years of jejune living, he decided to pursue a more adventurous lifestyle.
在多年的平淡生活中，他决定追求一种更有冒险精神的生活方式。