1. 试验场：testing for drugs in body fluids;体液所含毒品的测定;; | testing ground;试验场;; | tetanus;破伤风;;

noun

1. a region resembling a laboratory inasmuch as it offers opportunities for observation and practice and experimentation

e.g. the new nation is a testing ground for socioeconomic theories
Pakistan is a laboratory for studying the use of American troops to combat terrorism

Synonym: laboratory