详细解释:n. 拉动枪膛擦拭布的绳子
英语解释：
名词 pull-through:
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:
continue in existence after (an adversity, etc.)同义词：survive, pull through, pull round, come through, make it