on trial
成語所屬單字trial
on trial — 慣用語
1. in the process of being tested or judged, either in a court for a crime or in a
1.慣用語
釋義
在測試中；在受審
in the process of being tested or judged, either in a court for a crime or in a testing period for suitability
例句
The new security system has been on trial at the airport for the past three months.