单词	emergency drills
释义	emergency drills 应急演练
随便看	revolving block engine revolving-block engine revolving block slider crank mechanism revolving-block slider crank mechanism revolving blow out preventer revolving blow-out preventer revolving bobbin revolving body revolving boiler revolving boilers revolving bookcase revolving bookstand revolving boom crane revolving box revolving boxcircular box revolving box loom revolving box motion revolving bracket revolving bridge revolving brush revolving brushbrush roll, brush cylinder revolving bundle holder revolving burner revolving cabinet REVOLVING cabinets