单词	pop valve
释义	pop valve noun : a safety valve designed to open when the pressure of a fluid exceeds the force exerted by the spring that normally keeps the valve closed Word History Etymology pop entry 1
随便看	stack stack (up) stack gas stack process stack room stack silage stack the odds against stack the odds against (someone) stack the odds against someone stack the odds in favor of stack the odds in favor of (someone) stack the odds in favor of someone stack the odds in someone's favor stack up stack up (against or with) stack up against or with stackable stacked stacked (up) stacked heel stacked up stacked up (against or with) stacked up against or with stacker stackers

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