each other与one another
这是两个在词义和用法上极为接近的短语.有些语法家认为：each other只能用于两者之间；one another只能用于两者以上.但是,在现代英语的实际使用中,人们会发现：each other也可用于“两者以上”；one another也可用于“两者之间”.
I think music is one way people can get to know each other better.
The husband and wife sat down at the table facing one another.
each other和one another可交互使用.但one another侧重两以上的互相；而each other则侧重两人之间的互相较为常见.