He used it to tie off blood vessels.

凶手用它来系住血管。

Grab a hair tie, and tie off that section.

拿一个发圈，把那个部分绑起来。

Remove your pants, fill them with air, then tie off the legs.

脱下裤子，充满空气，系好裤腿的两头。

The dispatcher guided Miranda, telling him to use his shoelaces to tie off the umbilical cord.

电话那边的接线员指导吉拉尔多说用鞋带将婴儿的脐带捆绑住。

Take one of these and twist it in the middle and then double it over and hold tight and tie off a hand.

取其中之一从中间扭转它，然后把它折一下，抓紧并系紧做为一只手。