1. (不小心)遇上;(不慎)陷入
If you walk into an unpleasant situation, you become involved in it without expecting to, especially because you have been careless.

e.g. He's walking into a situation that he absolutely can't control.
他正陷入自己完全无法控制的局面。

2. 轻易获得(工作)
If you walk into a job, you manage to get it very easily.

e.g. When I left school, I could walk into any job.
我毕业后可以不费吹灰之力地找到任何工作。