You could answer all these questions in less time than it will take you to finish reading this article which, for a second time, I suggest you skip.
你回答以上问题所用的时间比应该比读完这篇文章还快这也是我第二次建议你可以略过不读的部份。
Delete up to the first embedded newline in the pattern space. Start next cycle, but skip reading from the input if there is still data in the pattern space.
删除当前模式空间的第一块,重新开始下一次循环,这个在后面例子中给予验证。
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