salve a tutti! quacuno saprebbe dirmi il significato di 一句一行？

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一句一行
uno frasi x una riga

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COULD YOU PROVIDE US WITH THE FULL TEXT?

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i guess whta u want to say is  一言一行  
言 in chinese means language ,and the words u said.
行means action and the behavior.
一 means  one , in this case we should translate it into every.
so this sentence means every words somebody said and every behavior somebady did.
let's make an instance, 
在国外，你要注意你的一言一行，因为此时你代表的是一个国家的形象。 
when u r in a foreign country,u should  watch your every word u said and every behavior u did,because u are representing your whole nationailty.