| 单词 | sludge |
| 释义 | sludge /sluj/, n. 1. mud, mire, or ooze; slush. 2. a deposit of ooze at the bottom of a body of water. 3. any of various more or less mudlike deposits or mixtures. 4. the sediment in a steam boiler or water tank. 5. broken ice, as on the sea. 6. a mixture of some finely powdered substance and water. 7. sediment deposited during the treatment of sewage. 8. Also called activated sludge. Bacteriol. sewage sediment that contains a heavy growth of microorganisms, resulting from vigorous aeration. 9. a fine, mudlike powder produced by a mining drill. [1640-50; var. of dial. slutch, slitch, ME slich slime, wet mud (cf. its deriv. slucched muddy); appar. of expressive orig.] |
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