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单词 safety valve
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈsafe•ty ˌvalve, n. [countable]
  1. Hydraulicsa device that opens to release a fluid before pressure reaches dangerous levels.
  2. a harmless way of releasing feelings that have been kept in:Exercise was his safety valve.

WordReference Random House Unabridged Dictionary of American English © 2024
safe′ty valve′, 
    1. Hydraulicsa device that, when actuated by a gas or vapor pressure above a predetermined level, opens and allows the gas or vapor to escape until its pressure is reduced to a pressure equal to or below that of the predetermined level. Cf. relief valve. 
    2. a harmless outlet for emotion, tension, etc.
    • 1805–15

Collins Concise English Dictionary © HarperCollins Publishers::
safety valve n
  1. a valve in a pressure vessel that allows fluid to escape when a predetermined level of pressure has been reached
  2. a harmless outlet for emotion, energy, tension, etc
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更新时间：2025/7/31 2:13:54