钝根 meaning in Chinese

blunt-ended root

In the scripture " on detachment from outer appearance " by bodhidharma , it is stated , " the buddha conveys his teachings with infinite convenience and signifies the intangible through the tangible , as sentient beings , dull in aptitude , might not understand the inner significance of the teachings
达摩破相论云：佛所说经，有无量方便，以一切众生钝根狭劣，不悟甚深之义，所以假有为，喻无为若复不修内行，唯只求表，希望获? ，无有是处。