better than的用法I should know better than to protect my secret with a safer passcode.这里的better than是怎样个用法?

know better (than to do sth) - 意思是 to be wise or moral enough Not to do something
e.g.
She's only six, but she is old enough to know better than to run off without us.
这句话是错的。
should know better than 的意思是，应该知道，实际意思是，没有那么做以致造成了损失
应该改成：
I should know better than to using a weak passcode.
我应该知道不能用简单密码。

know better (than to do sth) - 意思是 to be wise or moral enough Not to do something
e.g.
She's only six, but she is old enough to know better than to run off without us.

这句话是错的.
should know better than 的意思是,应该知道,实际意思是,没有那么做以致造成了损失
应该改成：
I should know better than to using a weak passcode.
我应该知道不能用简单密码.