钓鱼前，他慢慢把鱼线从卷轴上放出来。

Before fishing, he slowly ___unreeled the fishing line from the reel.

随着会议的进行，整个项目的计划开始像滚落的线团般散开。

As the meeting progressed, the entire project plan started to ___unravel like a spool of thread rolling away.