(n) trying something to find out about it, Syn. test, tryout, trial run, Example:a sample for ten days free trial; a trial of progesterone failed to relieve the pain
[引而不发 / 引而不發, yǐn ér bù fāㄧㄣˇ ㄦˊ ㄅㄨˋ ㄈㄚ] to pull the bow without shooting (成语 saw from Mencius); ready and waiting for action; to go through the motions; to practice; a trial run#113579