麻木不仁 [- - bù rén]be petrified; benumbed and unresponsive; dead [lost] to all feeling; hardened; indifferent and apathetic; inert; insensitive; lethargy; paralyzed; slow and stupid in attending to affairs; stolid; thick-skinned numbed; torpid; unfeeling; unconcerned; unsympathetic:
•¶ 他对同志不是满腔热情， 而是冷冷清清， 漠不关心，麻木不仁。 He felt no warmth towards his comrades but was cold, indifferent and apathetic.