"We know each other very well" 是一种表达方式，表示两个人非常了解对方。这句话的来源是英语中的常见短语，用来描述两个人之间的关系。
下面是一些例句：
"We've been friends for years, so we know each other very well."
"I've been working with John for a long time, so we know each other very well."
"My sister and I grew up together, so we know each other very well."
中文翻译如下：
"我们已经是朋友多年了，所以我们非常了解对方。"
"我和约翰一起工作很久了，所以我们非常了解对方。"
"我和我的妹妹一起长大，所以我们非常了解对方。"
下面是一些例句：
"We've been friends for years, so we know each other very well."
"I've been working with John for a long time, so we know each other very well."
"My sister and I grew up together, so we know each other very well."
中文翻译如下：
"我们已经是朋友多年了，所以我们非常了解对方。"
"我和约翰一起工作很久了，所以我们非常了解对方。"
"我和我的妹妹一起长大，所以我们非常了解对方。"