嗅觉束与嗅球 Olfactory tract and bulb

感觉束 sensory tract

视觉跟随约束 look at Constraint

一种自觉的约束 mental discipline

视物感觉追随约束 look at constraint

视觉追随约束 look at Constraint

感觉无拘无束 Just as the four walls close me within

凝视视觉几何约束 Fixation vision geometric constraint