【法】 essence of the contract
bargaining; bond; contract; covenant; deed; indent; indenture; obligation
pact; stipulation
【经】 agreement; agreements; bargain; compact; contract; deed; indenture
instrument; title deed
be tenable; come into existence; establish; found; set up
element; essential; basic; key element
【医】 element; essence; essentia; factor; principle
【经】 factor