He led them up to Mr Sinik's roof and showed them in person, demonstrating on a friend, how he had garrotted his victims.

把们带到辛尼克先生屋顶，和一朋友一块展示，是如何绞死受。

The end of that may garrotte much of the tail.

尾巴末端可能会绞死大部分尾巴。