出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第298页（219字）
指文章里隐约可看出某些意思，例他来过一封信，从字里行间可看出，他对昔日的恋人仍念念不忘。
We have had one letter from him and，reading between the lines，we know that he still has tender feelings for his sweetheart．\