put \lay one's finger on

put \lay one's finger on
put \lay one's finger on

put \lay one's finger on
get into the act才是插手
have a finger in the pie是参与其事,多管闲事,干涉,染指
put/lay one's fingers on something 就是正确地指出(位置、问题、症结、病症等)

put/lay one's fingers on something 准确地指出(位置、问题、症结、病症等)