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1. Oxford American Dictionary

   blowoff

   • IPA[ˈblōˌôf]

   美式

   • n.
     the action of emitting a gas, typically to reduce pressure to a safe level

   • noun: blow-off

2. • 釋義

   n.

   名詞

   • 1. the action of emitting a gas, typically to reduce pressure to a safe level steam blowoff piping