反义词前缀是dissimilar，中文意思是adj. 不同的

And a room with books in it induces， at least in some， a feeling not dissimilar to that of a fire in the fireplace on a cold winter's night.

至少在某种程度上，房间里放着的书会产生一种与寒冷冬夜里壁炉里的火差不多的感觉。