by-line

They studied the document line by line.

他们逐行逐句地份文件。

Opera face can present the age by lines of their eyes, and to express their temperament by ukase, and using their impression to present different characters.

勾画时以“尾纹”的高低曲直年龄，用“法令纹”的上下开合表现气质，用“印堂纹”的不同图案象征人物性格。