v. become or cause to become undone by separating the fibers or threads of
vt. 阐明, 解决, 解开
vi. 散开
1. The detective worked hard to unravel the mystery of the missing necklace.
侦探努力揭开失踪项链的谜团。
2. As I started to unravel the sweater, I found a small hole in it.
当我开始拆解这件毛衣时，发现上面有一个小洞。
3. It took time to unravel the complicated instructions for the new machine.
理清这台新机器复杂的说明书花了我一些时间。