proving-ground facility试验场地设施
proving-ground facilities试验场设施
Proving-ground network试验场网络
milford proving ground试验场;米尔佛德试车场
White Sand Proving Ground白沙试验场
proving ground test实车试验场试验
air proving ground command空军试验场管理部
Lommel Proving Ground基地
the Dahlgreen Proving Ground于达尔格林试验场
N-COUNT（可数名词） If you describe a place as a proving ground, you mean that new things or ideas are tried out or tested there. 试验场
New York is a proving ground today for the Democratic presidential candidates.
今天的纽约是民主党总统候选人的试验场。