Jack-knife
n. 大折刀\\nvt. 用大折刀切/戳\\nvi. 弯身, (分节连接的车辆在打滑时)中间突然弯折失控
📖 牛津释义
jack-knife
n
pl -knives
1 large pocket-knife with a folding blade （可放衣袋内的）大摺刀.
2 (sport 体) dive in which the body is first bent double and then straightened 屈体跳水. jack-knife v [I]
(esp of an articulated lorry) bend sharply in the middle into a V-shape, usu as the result of an accident （尤指铰接的货车）弯成V字形（通常因交通事故所致）
A heavy lorry has jack-knifed on the motorway, causing long delays. 一辆重型铰接货车在高速公路上撞成V字形, 耽搁了很长时间.
🧩 词语组成解析
jack
[[dʒæk]]
n. 插座, 千斤顶, 男人\\nvt. 抬起, 提醒, 扛举, 增加, 提高, 放弃\\na. 雄的\\n[计] 插座
knife
[naɪf]
n. 刀;匕首;刃部;手术刀;
vt. 切割，刺;伤害;
vi. 劈开;划过;
🗣️ 情景例句
They had a special on frozen fish down at the supermarket.
超级市场 冷冻鱼特价。
He is feeling the surface.
他在触摸着表面。
It has expanded without any idea of the true nature of the human beings who run the machines,
现代工业发展起来了，却根本没想到操作机器的人的本质。