【法】 invalid contract; nullity of contract; void contract
be of no effect; invalidity; impotence; inefficacy; nullification; nullity
【计】 IDL; ineffectiveness
【医】 inefficacy
【经】 inefficiency; null and void
bargaining; bond; contract; covenant; deed; indent; indenture; obligation
pact; stipulation
【经】 agreement; agreements; bargain; compact; contract; deed; indenture
instrument; title deed