从基础数据源删除当前行。

Deletes the current row from the underlying data source.

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我们还可以使用该命令替换给定行号的缓冲区中的文本，或者删除当前行中第一个出现的字符串。

We can also replace the text in the buffer at a given line number or remove the first occurrence of a string in the current line, using this utility.

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