To push on to a favorable outcome in a disorganized way.
胡乱应付过去：以毫无组织的方式应付过去而得到一个还不错的结果
cope more or less satisfactorily despite lack of expertise, planning, or equipment
差强人意地应付，设法应付
students are often left to muddle along.
学生们经常被丢在一边自己应付。
confuse two or more things with each other
混淆
the words seemed to have &B{got muddled up}.
这些词似乎被混淆了。