exhaust是什么意思(exhaust的用法)
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一、exhaust是什么意思
1、exhaust 废气
2、ex-, 向外。-haust, 排出。
二、exhaust的用法
1、exhaust (v.)
2、1530s, "to draw off or out, to use up completely," from Latin exhaustus, past participle of exhaurire "draw off, take away, use up, empty," from ex- "off" (see ex-) + haurire "to draw up" (as water), from PIE *aus- (3) "to draw water." Meaning "make weak or helpless, as by fatigue" is from 1630s. Related: Exhausted; exhausting.
3、exhaust (n.)
4、"waste gas," 1848, originally from steam engines, from exhaust (v.). In reference to internal combustion engines by 1896. Exhaust pipe is from 1889.
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