desilting sand pit 隔沙井 ; 隔沙池
clay and sand pit 泥沙矿坑
eastern sand pit 东砂坑
Sand-pit lake 沙坑湖
sand pit ball 沙坑球
sand pit stick 沙坑杆
deposited sand pit 沉积沙地
rectangular sand-pit 矩形河道
sand pit ball tech 沙坑球技术
N-COUNT A sandpit is a shallow hole or box in the ground with sand in it where children can play. 沙坑 [英国英语]
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