sump oil

名词 n.
中文释义

英文释义

名词 n.
  1. Lubricating oil contained in the sump of an engine; the waste oil drained from the sump at the time of an oil change. uncountable
    — Dirty sump oil is pumped out along a waste oil pipe line to storage tanks by the boiler house, to be used as boiler fuel.
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