instrumental sensitivity

例句：

1. 1. The instrument is very useful forplaying the piano.
   这个乐器对于弹钢琴非常有用。
2. 2. The teacher was instrumental in helpingthe student succeed.
   老师在帮助学生成功方面起到了关键作用。
3. 3. The team'sperformance was instrumental in winning the game.
   团队的表现对赢得比赛起到了关键作用。