Another answer to that question is also, if you type the prefix twice, it sends it once to the underlying shell.

该问题的另一个答案是，如果您输入前缀两次，它会将其发送到底层 shell 一次。

One note about the key bindings: all the key bindings have a form that is like you type a prefix and then some key.

关于键绑定的一个注意事项：所有键绑定都有一种形式，就像您键入一个前缀，然后键入某个键。