gravelyadv.严肃地;庄重地;严重地;沉重地
graveln.碎石v.铺碎石;使困惑
gravel specimens充填砾料
gravel pack sand砾石充填砂
gravel migration砾石迁移
gravel-poundern.步兵战士(军队用语)
gravel by nature天然砾石
gravel aggregate砾石骨料
gravel separator卵石分离器,除卵石器
gravel lube line砾石润滑管线
Gravel terra near砂礓黑土
gravel bed-load近坝河段