单词	frost valve
释义	frost valve noun : a valve to drain the part of a pipe, hydrant, or pump where water would be liable to freeze Word History First Known Use 1865, in the meaning defined above
随便看	O'Kelly O'Leary O'Neal O'Neill O'odham o'odhams o's o-be-joyful o-grade o-o-a-a O-ring O-type star o.g. o.g.'s o.g.s OA OAA oaf oafish oafisher oafishest oafishlier oafishliest oafishly oafishness

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