冰川带着低处嵌着的岩石活动时，形成了这些一条条平行的沟槽或擦痕。
There are parallel grooves or scratches produced when the glacier moved with its load of embedded rock on the lower side.
冰川带着低处嵌着的岩石活动时，形成了这些一条条平行的沟槽或擦痕。
There are parallel grooves or scratches produced when the glacier moved with its load of embedded rock on the lower side.
应用推荐