When good students turn in an essay, they dream of their instructor returning it to them in exactly the same condition, save for a single word added in the margin of the final page: "Flawless."

当优秀的学生上交一篇文章时，他们梦想着老师能把它原封不动地还给他们，除了在最后一页的空白处加了一个词：“天衣无缝”。