资料来源 : pyDict

系腰带,系安全带;别说话,请安静,住口!

资料来源 : WordNet®

belt up
     v : refuse to talk or stop talking; fall silent; "The children
         shut up when their father approached" [syn: {close up}, {clam
         up}, {dummy up}, {shut up}, {button up}, {be quiet}, {keep
         mum}] [ant: {open up}]