单词	lockdown
释义	lockdownlock·down /ˈlɒkdaʊn $ ˈlɑːk-/ noun [countable, uncountable] 1a time when prisoners are not allowed out of their rooms, usually after there has been violence in the prison2a time when all the doors in a building are locked in order to protect the people inside from danger:  The school went into lockdown after the shooting.
随便看	mark-up marl Marlborough Marley, Bob Marley's Ghost marlin Marlowe, Christopher Marlowe, Philip marmalade Marmara Marmite marmoset marmot Maronite maroon Marple, Miss marque marquee marquess marquetry Marquette, Jacques marquis Marrakesh marriage marriageable

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