Seems like the Code, real thick and simple themes;

似书似典，真实厚重而主题简单；

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Country music features simple themes and melodies describing day to day situations and the feelings of country people.

乡村音乐的特点是用简单的主题和旋律来描绘村民们的日常生活和思想感情。

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She makes a simple story resonate with complex themes and emotions.

她使一部情节简单的小说充满了复杂的主题和情感。

《牛津词典》

Turns out they make stock data and the like available essentially via text files or via a simple API application programming interface which will be one of the themes of the course.

他们基本上是通过使用文本文件,或者通过一个简单的API应用,或者编程接口来获取股票和其他一些数据,这些都是本课程的主要内容。

哈佛公开课 - 计算机科学课程节选

While dealing with diverse universal themes, the simple musical and literary composition invites improvisation, imitation and singing in unison.

UNESCO: MEDIA SERVICES

Equally if not more important has been a change in plot, from the traditional martial violence, simple noble samurai defeating evildoers themes, to more character-driven and sympathetic themes, including love stories or stories of daily life conflict within the social constraints of the Edo period.

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