unravel

verb
1
if you unravelthreads that are twisted, woven or knitted, or if they unravel, they become separated
گشودن, باز کردن, بازکردن, باز شدن
2
to start to fail or no longer stay together as a whole
فروپاشیدن, از هم پاشیدن, متلاشی شدن
3
to explain something that is difficult to understand or is mysterious; to become clearer or easier to understand
حل کردن, باز کردن, روشن کردن, آشکار کردن
The discovery will help scientists unravel the mystery of the Ice Age.