短语词组短語sewage sump 汙水坑;集汙槽sump oil 汙油;油槽存油;沉澱池油;油底殼存油mine sump [鑛業]鑛井水倉;煤鑛水倉transfer sump 轉運水倉sump area 貯油槽區winch sump 絞磐油槽sump water 汙水condensation sump 熱井oil sump 油池；貯油槽 返回 sump