jack-in-the-boxes

• n.jack-in-the-box的变形

jack-in-the-box['dʒækinðə,bɔks]

• n.
  • (打开盒盖即行跳起的)玩偶；玩偶盒
  • (能放出多种玩意儿的)盒子焰火
  • 【机械学】差动齿轮
  • [美国英语]【动物】寄居蟹
• 变形:

  n.jack-in-the-boxes.jacks-in-the-box