1. 混日子：mucousa.黏液的,似黏液的 | muddle along混日子 | multilaterala.多边的;多国参加的

1. 虚度光阴;糊里糊涂过日子;混日子
If you muddle along, you live or exist without a proper plan or purpose in your life.

e.g. I've started going to evening classes to learn how to do things properly, rather than just muddling along.
我已经开始去夜校听课了，学习如何做事，而不是瞎混日子。