unwind
verb- [transitive, intransitive] unwind (something) (from something)
if something that has been wrapped into a ball or around something unwinds or you unwind it, it becomes, or you make it, straight, flat or loose again 解开,打开,松开(卷绕之物) - [intransitive]
to stop worrying or thinking about problems and start to relax synonym relax, wind down放松;轻松