单词jackknife
n.: 大折刀
v.: 弯成 V 字形（如铰接货车失控时的弯折）
网络: 刀切法；折刀法；杰克刀
大折刀:
a large knife with a folding blade
弯成 V 字形（如铰接货车失控时的弯折）:
to form a V-shape. For example if a lorry/truck that is in two partsjackknifes , the driver loses control and the back part moves towards the front part.
折拢;作镰刀式跳水
把...折拢
(跳水等时)屈体
用大折刀切
折叠式撑竿跳高
折体动作
大型折合式小刀;镰刀式跳水
大折刀;屈体跳水法
复数：jackknives
过去分词：jackknifed
现在分词：jackknifing
第三人称单数：jackknifes
v.turnskidswerveveerswivel
Arch spat some more tobacco juice on his boot top and whetted the jackknife blade some more.
阿奇又朝靴面上吐了些烟沫，再把大折刀磨了几下。
Jackknife fish (Equetus lanceolatus) are not commonly seen in the ocean.
高鳍鱼（捷克飞刀）不常见于海洋中。
a high diver who excelled in performing the jackknife.
精彩地表演镰刀式跳水的高个跳水运动员
LABMRMC accounts for this variance using the Jackknife method.
LABMRMC使用大型折合式小刀方法占有这不一致。
The Experimental Research of Applying Effect of Horizontal Bar Jackknife Upward Action Training Apparatus in Teaching Activities
单杠屈伸上训练器在教学训练中运用效果的实验研究
The Estimation of the Genetic Variance in Field Trials of Rice Breeding Line by Jackknife
水稻品系试验中遗传方差的刀切法估计