on trial 和 in a trial 有什么区别吗?请讲解下.

at the trial 与in a trial的区别, trial什么意思? 请翻译中文I am willing to serve on trial for some months at a sma 求教英语高手：1.at the trial 与in a trial的介词与冠词为什么 英语翻译Recently,a randomized double blind clinical trial on Gut test 与 trial的区别 如题,请教trial和judgement的区别, 解释trial balance什么意思 balance sheet ,trial balance,unjusted trial balance 和 adjust trial shipment 案件审判已结束 是 The trial of the case has finished 还是The trial on 一句英语求分析结构Prosecutors at a trial in France arising from the c