jack-knife
短语n. 大折刀 vt. 用大折刀切/戳 vi. 弯身, (分节连接的车辆在打滑时)中间突然弯折失控
发音
词形变化
别名
释义与例句
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1.
A compact folding knife.
He kept a jack-knife in his pocket for various tasks.
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2.
The front-dive pike, in which the body folds and unfolds.
It took me hundreds of dives to master even the simple jackknife.
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3.
A semi-trailer truck accident in which the vehicle mimics the closing of a jack-knife.
非正式I have seen several jack-knives along that dangerous stretch of road.
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4.
A game of skill played with a pocket knife in which participants try to throw or flip the knife to stick upright in the ground at specified points or areas; mumblety-peg.
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5.
Alternative spelling of jackknife.
数学
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1.
To fold in the middle, as a jackknife does.
The cat jackknifed in the air and landed gracefully on its feet.
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2.
To cause a semi-trailer truck to fold like a jackknife in a traffic accident.
非正式Before I knew what was happening, I'd jack-knifed the truck.
Before I knew what was happening, I'd jack-knifed.