单词	subsoil
释义	sub·soil (sŭbsoil′) n. The layer or bed of earth beneath the topsoil. tr.v. sub·soiled, sub·soil·ing, sub·soils To plow or turn up the subsoil of. subsoil′er n.
随便看	ricksha rickshaw RICO ricochet ricotta rictal rictus rid ridable riddance ridden ridder riddle riddle riddler riddler ride Ride rideable Rideau Canal ride for a fall ride herd on ride high ride out rider

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