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1·The nitpicker who criticizes her is her best friend Laura.

唯一批评她的是她的好朋友劳拉。

2·I hate to sound like a nitpicker, but I found a comma missing in your third paragraph and another comma missing down in the tenth paragraph.

我很讨厌听起来好像是在挑剔。但是我发现你文章的第三段里少了一个逗号，在第十段里也少了一个逗号。