A friend to all is a friend to none.

对一切人都是朋友，对哪一个也不是朋友。

A friend to all is a friend to none.

所有人的朋友不是真正的朋友。

A friend to all is a friend to none. t.

是所有人的朋友也就不是任何人的朋友。

You know what they say: a friend to all is a friend to none.

你知道有句俗话是这么说的：交游满天下知心无一人。