| 单词 | proving ground |
| 释义 | proving ground Word forms: proving grounds countable noun If you describe a place as a proving ground, you mean that new things or ideas are tried out or tested there. New York is a proving ground today for the Democratic presidential candidates. |
| 随便看 |
英语词典包含147115条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。