推測應該同時沙金分佈於河床上，岩金則分佈於盆地的山丘上。

推測應該同時沙金分佈於河床上，岩金則分佈於盆地的山丘上。

結果 (英文) 1:

It is speculated that the sand and gold should be distributed on the river bed at the same time, and the rock gold should be distributed on the hills of the basin.

結果 (英文) 2:

It is speculated that sand gold is distributed on the river bed and rock gold is distributed on the hills of the basin.

結果 (英文) 3:

It is assumed that sand and gold should be distributed on the riverbed at the same time, while rock gold should be distributed on the hills of the basin.