【法】 outside contracting approach
adopt; introduce; adoption
【经】 employ
environment; outside; the external world
【化】 outer sphere
contract; job
【化】 undertake
【经】 by contract; contract
means; measure; medium; method; plan; technique; way; ways and means
【计】 P; PROC
【医】 modus
【经】 means; modus; tool