For example, the modified line should have four Spaces in front of it (two for the indent to posts and two for the indent to modified).

例如，modified行开头前应当有四个空格(两个表示posts的缩进，两个表示modified的缩进)。

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A modified line contact is the result.

修正的结果是形成一个线接触。

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A modified line contact is the result.

修正的结果是形成一个线接触。

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