| 单词 | vacuum activity |
| 释义 | vacuum activitynounethology instinctive behaviour occurring in the absence of the appropriate stimulus Words nearby vacuum activityvacuolation, vacuole, vacuous, vacutome, vacuum, vacuum activity, vacuum aspiration, vacuum bottle, vacuum brake, vacuum casting, vacuum cleaner Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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