Many drugs were found by trial and error
很多藥物都是通過反復(fù)試驗(yàn)才發(fā)現(xiàn)的。
We plan to release a prototype this autumn for trial in hospitals.
我們計劃今年秋天在各醫(yī)院推出一個模型進(jìn)行試驗(yàn)。
The system was introduced on a trial basis for one month.
這個制度已引進(jìn)試行一個月。
The date of the trial has been advanced by one week.
審判日期提前了一星期。
The trial is expected to continue for three months.
預(yù)計審判要持續(xù)三個月。