在知识图谱的构建中，以下哪项是关键步骤？

An author is revising a manuscript for a historical novel. In one section, they initially describe a character's emotional state using very direct, literal language. However, their editor suggests using more figurative language to add depth and complexity to the character's emotions. Which of the following revisions would most effectively employ figurative language to achieve this goal?

当有人对你说‘你真笨’时，以下哪种回应最符合比较删减的破框技巧？

以下哪个操作系统的内核是开源的？

字符串的定义是什么？