proving ground 1. (尤指武器等器材的)试验场，检验场 a proving ground for new weapons 新武器试验场 2. (理论、发明、技能等的)实验(或试验)场所(或场合) The southern portion of the southern hemisphere is an excellent proving ground for meteorological theories. 南半球的南部是各种气象学理论最理想的实验场所。 Ellington always used his orchestra as a proving ground for his compositions. 埃林顿总是利用他的管弦乐队来试验他的作品。