knuckle

• General purpose knuckle threads - part 2 : deviations and tolerances
  通用圆螺纹.偏差和公差
• Still mostly a baby , and is always suckin ' on her knuckle
  还是个娃娃，老是吸吮自己的手指
• Still mostly a baby , and is always suckin ' on her knuckle ,
  还是个娃娃，老是吸吮自己的手指
• Still mostly a baby , and is always suckin ' on her knuckle ,
  还是个娃娃，老是吸吮自己的手指
• The hook and the knuckle bar that formed the guard
  护手的勾和护拳。
• Still mostly a baby , and is always suckin ' on her knuckle
  还是个娃娃，老是吸吮自己的手指
• The boy scraped the skin off his knuckles
  这男孩擦去了指节上的皮。
• Lifting hooks for hoists ; knuckle threads
  起重机的提升吊钩.圆螺纹
• The joints near his fingernails and knuckles look swollen
  指头和指节旁边的关节，似乎有肿大。