statistics of groping the same item

例句：

1. 1. The scientist was groping throughthe dark room to find the missing equipment.
   科学家在黑暗的房间中摸索寻找丢失的设备。
2. 2. The old man groped hisway through the fog to safety.
   老人摸索着穿过雾气到达安全地带。
3. 3. Thedetective groped for clues inthe dusty old book.
   侦探在灰尘满布的旧书中摸索线索。