They saw a cavelike gully and ran to it.

他们看到一处暗沟就去。

It’s unlikely that this gully was produced by nature.

这个溪谷不大可能是自然出现的。

To steady the Yellow River channel into the sea and to delay the floodtime of present Qingshui gully, the artificial outlet of Qing 8 was realized.

为稳定黄河入海流路，尽可能延长现行清水沟流路的行洪时间，进行清8人工出汊。