短語(yǔ)詞組短語(yǔ)investigate trace find out 追究查找trace out detail 探尋蹤跡trace developing -out experiment 示蹤顯影實(shí)驗(yàn)With out a trace 失蹤現(xiàn)場(chǎng)find out investigate trace 追查Without out a trace behind 沒(méi)有回憶在背后 返回 trace out