1.b> (; ), ( i>); , ( i>); I unravelled the string and wound it into a ball ; I had to unravel one of the sleeves because I realised I'd knitted it too small - , , ; you'd better mend that hole before the whole sweater starts to unravel , , ;
2.b> (; ), , ( , , . i>); to unravel smb.'s plans / ; their plans (were) unravelled ; the company started to unravel when two of the directors were arrested / ;
3.b> (, ), , ; , (, , .i>); they were attempting to unravel the cause of death ; to unravel a mystery / ; we've got a long way to go before we unravel the secrets of genetics , / .