It allows you to open the /etc/passwd file and read each line one at a time, cutting out just the first field in the file and then printing that line.
它允许您打开 /etc/passwd文件，并且每次读取其中的一行内容，仅截取文件中的第一个字段，然后打印这行内容。
If instead the preceding code did not contain line 2 and if you used a second button with an Open page simple action to go to page2, the computed field would come back empty.
如果上述代码中不包含第二行内容，并且使用带有简单操作Openpage的第二个按钮以转到page2，那么computed字段将返回空值。
Three open star clusters, Charles Messier's M36, M37, and M38 line up in the dense star field above and left of Elnath, familiar to many binocular-equiped skygazers.
三个疏散星团，梅西耶天体M36、M37和M38在恒星密集的图片上部、五车五的左边排成线，是双筒望远镜熟悉的观测目标。
Three open star clusters, Charles Messier's M36, M37, and M38 line up in the dense star field above and left of Elnath, familiar to many binocular-equiped skygazers.
三个疏散星团，梅西耶天体M36、M37和M38在恒星密集的图片上部、五车五的左边排成线，是双筒望远镜熟悉的观测目标。
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