jack-knifing

英[d'ʒækn'aɪfɪŋ] 美[d'ʒækn'aɪfɪŋ]
  • n.牵引机器相对拖拉机的转角
  • dive n.潜水;跳水vi.跳水;俯冲;潜心钻研
  • jackknife n.大型折合式刀;镰刀式跳水vt.使弯曲;用折刀切vi.屈身;折叠
动词 jackknife:
  1. dive into the water bending the body at the waist at a right angle, like a jackknife