pull-through

名词 pull-through:

1. cleaning implement consisting of an oily rag attached by a cord to a weight; is pulled through the barrel of a rifle or handgun to clean it

动词 pull-through:

1. continue in existence after (an adversity, etc.)
   同义词：survive, pull through, pull round, come through, make it
2. bring into safety
   同义词：save, carry through, pull through, bring through