You insult her intelligence if you assume that a mere slogan and a few vapid adjectives will persuade her to buy anything.

如果你认为只要一句广告词配上一些索然无味的形容词，就可以说服她去买任何东西，那你是在侮辱她的智慧。

youdao

She made a vapid comment about the weather.

她对天气作了一番枯燥的评论。

《柯林斯英汉双解大词典》

Set during the second world war, Stella's story is intercut with the lives of her son (in the army and heir to an estate in Ireland) and Louie, a vapid good-time girl who crosses Harrison's path.

故事背景设置在二战时期，镜头不断在斯特拉和她儿子与路易的生活(参军并继承了爱尔兰的一处房产)间切换，路易是哈里森生活中的一个正值青春年华但索然无味的女孩。

youdao

As with all his adaptations, he subverts the text to concentrate on the heroine Gwendolen, who he turns into a vapid but stroppy travesty of a modern woman, instead of allowing the original plot to speak for itself.

BBC: Doctor Zhivago and Daniel Deronda: Your views

You insult her intelligence if you assume that a mere slogan and a few vapid adjectives will persuade her to buy anything.

FORBES: True or False: 'The Consumer Isn't A Moron; She Is Your Wife'

They disapprove of the vapid notion that spending more on a soft drink or ice cream can bring happiness or social cachet.

ECONOMIST: Brands