沙砾覆于铁质土层与砂砾层之上.Gravelly - sand over an iron - pan and gravel layer.小石头、砂砾层也可用来做隔绝层,以保持水分,降低土壤的温度.Pebbles and gravel also insulate the soil to keep surface temperatures low and preserve water.古河谷的边缘地带,往往缺失底部的河床相砂砾层.The ed...
有一次他裤链没拉就出了厕所。He once emerged from the toilets with his flies unfastened.急救人员担心燃烧着的船只可能会脱链滑走。Emergency workers fear that the burning ship could slip its moorings.这些分子链彼此缠绕，形成缆线状的结构。These strands of molecules twine around...
Seles won 10 tournaments, and was the undisputed world champion.塞莱斯拿到了10个锦标赛冠军，是当之无愧的世界冠军。The Spaniard gallantly fought off 11 set points before Seles won 8-6.这名西班牙运动员顽强地挽救了11个赛点，最终以6比8输给了塞莱斯。I think that says a lot abou...