| 词汇 | proving ground |
| 释义 | proving ground 1 ENTRIES FOUND: proving ground (noun) proving ground noun plural proving grounds proving ground noun plural proving grounds Learner's definition of PROVING GROUND [count] 1 : a place where things or people are tested or tried out for the first time（新生事物或新手的）试验场所，检验场所 — often + for The local racetrack became a proving ground for new jockeys.当地的赛马场成为了新骑师的试手场地。 2 : a place where scientific testing is done（用于科学试验的）试验场 |
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