柯林斯词典fissure /ˈfɪʃə/ (fissures) 1. N-COUNT A fissure is a deep crack in something, especially in rock or in the ground. (尤指岩石)裂缝 返回 fissure剑桥词典a deep , narrow crack in rock or the earth （岩石或土地的）裂缝，裂隙 medical specialized a long , deep , narrow hollow area in a surface in the body , especially in the cerebral cortex (= the surface of the brain ) （大脑皮层等的）裂纹，沟 medical specialized a fault on the surface of a tooth （牙齿表面的）裂；疵点 返回 fissure