Senses
吃劲/ 吃勁 strenuous
to entail much effort; to be a strain; to be laborious
吃劲/ 吃勁 to bear weight
to be able to withstand pressure or support a heavy load; to get leverage
吃劲/ 吃勁 crucial
(colloquial) important; critical; vital (often used in the negative to mean something does not matter)