put a finger upon

• 触碰

put a finger upon的用法和样例：

例句

1. If I touch a burning candle I can feel no pain.
   触碰蜡烛我也感觉不到疼痛。
2. This would be effective if you could adequately activate everything on the Treo screen by the touch of a finger.
   当你需要运行屏幕上的内容时，只需要用手指触碰就可以了。