safety curtain
英式
- a fireproof curtain that can be lowered between the stage and the main part of a theatre to prevent the spread of fire.
noun: safety curtain, plural noun: safety curtains
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- IPA[ˈsāftē ˈkərtn]
美式
- a fireproof curtain that can be lowered between the stage and the main part of a theater to ...
Oxford American Dictionary