She's searching for subject matter for her new book.

她要写一部新书，正寻找题材。

《牛津词典》

That is, the scheme can be considered a special kind of context for subject definition topics.

也就是说，可以把方案当作负责主题定义题目的特殊类型的内容。

youdao

The Work and the Thema (FRSAD's word for subject) have no existence in metadata without a machine-readable identity that allows them to have being.

作品和主题(Thema，是FRSAD对于主题的说法)如果没有机器可读的身份让它们成为现实，它们就根本没法在元数据里存在。

youdao

The subject is pain. Over the years,however, medical studies have led to new hope for patients who are hurting.

VOA: special.2010.05.04

So the reasons for this really enormous shift in plans, and the enormous shift in subject matter, are worth exploring.

弥尔顿的计划变化为何如此之大，他对主题的选择为何有这么大的改变，是值得探究的。

耶鲁公开课 - 弥尔顿课程节选

The nativity of Christ, as you can imagine, was a popular subject for early seventeenth-century poets for pious early seventeenth-century poets.

基督诞生，你可以想象，对17世纪的诗人来说是很受欢迎的主题,特别是那些虔诚的17世纪的诗人。

耶鲁公开课 - 弥尔顿课程节选

Inspired by the religious sobriety of the early-19th-century German painters who called themselves "Nazarenes, " by England's Gothic-revival movement and by the straightforward imagery of early-Renaissance painters like Giotto, they looked to the Bible, to the poetry of Keats and Tennyson and to Shakespeare for subject matter, proclaiming their intention to shun vulgar or sentimental subjects and to paint directly from nature.

WSJ: Victorian Avant-Garde | Pre-Raphaelites: Victorian Art and Design | National Gallery of Art | By Barrymore Laurence Scherer

The project began two years ago when University of Canterbury student Andrew Rudge, 25, began searching for a subject for his PhD in mechanical engineering.

CNN: Device to save hospitals billions

Early exposure to computer science can lead students to develop an aptitude or liking for the subject, apply for opportunities like tech internships, and pursue it as a career path.

CNN: Molding the next generation of computer scientists