| 词汇 | trial run |
| 释义 | trial runBrE /ˌtraɪəl ˈrʌn/ NAmE /ˌtraɪəl ˈrʌn/ (also ˌtest ˈrun ) noun a test of how well sth new works , so that you can see if any changes are necessary (对新事物的)初步试验,试行 |
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