n.鋪礫石

My father scratched gravel for Shanghai last night. 我父親昨晚匆匆忙忙去了上海。

The road is covered with gravel. 這路用礫石鋪成。

We bumped up and down along the gravel path. 我們沿礫石小路顛簸而行。

The gravel ingredient of concrete. 石碴組成混凝土的砂料

Layered gravel and charcoal to make a filter. 將砂礫和木炭分層以做成過濾器

The workers mixed the asphalt with sand and gravel together. 工人們把瀝青和沙子、石塊混合在一起。