名詞 trial run:

1. trying something to find out about it
   同義詞：trial, test, tryout

1. She's taking the exam a year early, just as a trial run (for the real thing).
   她提前一年參加考試，算是(正式考試的)試考。
2. The machine, however, failed on its trial run.
   但這部機器的試車失敗了解。
3. The programme was given a trial run to gauge viewers' reactions.
   該節(jié)目進行了試演以了解觀眾的反應(yīng)。
4. Take the car for a trial run to see if you like it.
   試試那輛汽車，看看你是否滿意。