什么是 exhaust?To wear out completely. See Synonyms at tire1.To drain of resources or properties; deplete: tobacco crops that exhausted the soil. See Synonyms at deplete.To use up completely: exhausted our funds before the month was out. To treat completely; cover thoroughly: exhaust a topic. To draw out the contents of; drain: exhaust a tank gradually. To let out or draw off: exhaust vaporous wastes through a pipe. To escape or pass out: Steam exhausts through this valve. The escape or release of vaporous waste material, as from an engine.The fumes or gases so released.A duct or pipe through which waste material is emitted.An apparatus for drawing out noxious air or waste material by means of a partial vacuum.