dismally

For the eye of the thinker, all historic murderers are to be found there, in that hideous penumbra, on their knees, with a scrap of their winding-sheet for an apron, dismally sponging out their work.

以沉思者的眼光看，一切历史上的凶手都在这儿，在丑恶的昏处，跪在上，用他们当作围腰用的裹尸布的一角，抹去他们干的勾当。