a loose aggregation of small water-worn or pounded stones
砾石。
a mixture of such stones with coarse sand, used for paths and roads and as an aggregate
（用于铺路及用作三合土的）砂砾。
a stratum or deposit of such stones
砂砾层。
【医】 尿砂。
cover (an area of ground) with gravel
用砂砾铺（地）。
〈美， 非正式〉 使气恼，搅扰
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the strike was badly organized and it gravelled him to involve himself in it .这次罢工组织不力，他为自己参与其中而感到懊恼。
〈古〉 使困惑。
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graveln.砾石；砂砾层；砂砾；尿砂
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travelv.旅行；移动；走动；沿（路）旅行；经过；经受得住旅行；受喜爱；取得成功；运动
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graven.墓穴；坟墓；死亡；堆积处
"Middle English： from Old French, diminutive of
