trial run

preliminary test of the quality, effectiviness,ability, etc of sth or sb （对质量、 性能、 能力等的）初步测试: Take the car for a trial run to see if you like it. 试试那辆汽车, 看看你是否满意. * The programme was given a trial run to gauge viewers' reactions. 该节目进行了试演以了解观众的反应. * She's taking the exam a year early, just as a trial run (for the real thing). 她提前一年参加考试, 算是（正式考试的）试考.

trencher, trencherman, trend, trend-setter, trend-setting, trendily, trendiness, trendy, trepan, trephine, trepidation, trespass, trespasser, tress, trestle, trestle-table, trews, tri-, triad, trial, triangle, triangular, tribal, tribalism, tribe, tribesman, tribulation, tribunal, tributary, tribute, trice, triceps, trick, trickery, trickily, trickiness, trickle, trickle charger, trickster, tricky,