白天羽

1 has been invented and it has been used to detect gold which has been huried in the ground.
2 The leader of he party was examining the soil near the entrance to the cave,when the machine  showed that there was gold under the ground.
3 The party then searched the hole cave thoroughly but it did not find anyting except an empty tin trunk.

白天羽

3 The party then searched the whole cave thoroughly but it did not find anyting except an empty tin trunk.