在与同事、家人和朋友的交谈中，以及在给亲密朋友写私人便条或信件时，我们会使用非正式的语言。
Informal language is used in conversation with colleagues, family members and friends, and when we write personal notes or letters to close friends.
在与同事、家人和朋友的交谈中，以及在给亲密朋友写私人便条或信件时，我们会使用非正式的语言。
Informal language is used in conversation with colleagues, family members, and friends, and when we write personal notes or letters to close friends.
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