Our final sed example uses the = command to print line numbers and then filter the resulting output through sed again to mimic the effect of the nl command to number lines.

最后一个 sed 示例使用 = 命令输出行号，然后再次使用 sed 过滤生成的输出，以模拟使用 nl 命令对行进行编号的效果。

youdao

Through the analysis of karst geological conditions of Guangzhou metro Nos. 2, 3, 5 and 6 number lines, the method and measures were proposed for metro survey and design.

通过对广州地铁2、3、5、6号线经过地段的隐伏岩溶区地质条件的分析，提出地铁勘察、设计的方法和措施。

youdao

A large number of the telegraph lines were going in all directions, as crooked as the vines that grapes grow on.

VOA: special.2009.02.22

In fact, this is an argument that's been made a number of times, and I think there's a lot of sense to it -the last eight lines of Lycidas are written in a very specific line form the Italian scheme of the ottava rima.

这是一个的确曾被无数次提到的观点，并且我也认为这个观点确实有一定道理,利西达斯的最后8行是以一种非常特殊的体裁写的,即意大利式的八行诗。

耶鲁公开课 - 弥尔顿课程节选

A growing number of economists say the stimulus has indeed kept more Americans away from the unemployment lines.

VOA: standard.2010.06.18

"There are a number of lines of inquiry that are not yet complete, " the barrister said.

BBC: Constable Stephen Carroll

Indian Railways own and manage a number of lines, including the 53-mile long Darjeeling Himalaya Railway.

BBC: K1 train at Dolau Gwyn en route to Waunfawr

The number of lines in use rose by half, to above 250m.

ECONOMIST: Telecommunications in Brazil: The next big blackout? | The