trial run
noun [ C ] uk/ˌtraɪəl ˈrʌn/ us/ˌtraɪəl ˈrʌn/
试行；试验；试用
a practical test of something new or unknown to discover its effectiveness
We're holding a tournament in the new ice-hockey stadium, as a trial run for next year's Winter Olympics. 我们将在新的冰球场承办一次锦标赛，作为明年举办冬奥会的一次测试。
Synonyms: dummy run test
Compare: try-out
See also: trial noun