This string representation consists of either 32 contiguous hexadecimal digits or of groups of 8, 4, 4, 4, and 12 hexadecimal digits, separated by hyphens.

• 此字符串表示形式由32个连续的十六进制数字组成,或者由分别包含8个、4个、4个、4个和12个十六进制数字的组组成,各组之间用连字符分隔。