短语词组短语sewage sump 污水坑;集污槽sump oil 污油;油槽存油;沉淀池油;油底壳存油mine sump [矿业]矿井水仓;煤矿水仓transfer sump 转运水仓sump area 贮油槽区winch sump 绞盘油槽sump water 污水condensation sump 热井oil sump 油池；贮油槽 返回 sump