keep mum

英 美
  • 参照 mum
  • keek v.偷看;侦察
  • keel n.(船的)龙骨v.(船)倾覆;突然倒下;出问题
  • keel block 铸锭,钢试样锭,基尔试块,艇座
  • keelage n.入港税;停泊税
  • keelblock n.[船]龙骨墩
Verb:
  1. refuse to talk or stop talking; fall silent;

    "The children shut up when their father approached"