1 the process in a court of law where a judge, etc listens to evidence and decides if sb is guilty of a crime or not 审判;审讯:
a fair trial公平审讯He was on trial for murder.他因被控谋杀而受审。
2 an act of testing sb/sth 试验;试用:
New drugs must go through extensive trials.新药物必须经过广泛试验。a trial periodof three months三个月的试用期
trial and error trying different ways of doing sth until you find the best one 反复试验(以找出最佳途径)