jackknife是什么意思音标:英 ['dʒæknaɪf]美 [ˈdʒækˌnaɪf]

n. 大折合式刀, 屈体跳水
vi. 弯身
vt. 用大折刀切

n. a dive in which the diver bends to touch the ankles before straightening out
v. dive into the water bending the body at the waist at a right angle, pke a jackknife

jackknife的用法和例句：

1.At this speed the truck will jackknife.

以此速度 卡车将被屈折

2.Hammond, you're jackknifing me towards the edge.

哈蒙德 你要把我"拽"到悬崖下面去了

3.A jackknifed tractortrailer on 115, caused a major pile up.

115公路一辆牵引式挂车折断了 引起了大堵车

4.Any more than a nine percent depression rate, and you will jackknife at that speed.

每次大约百分之九的幅度 你就可以逐渐减速

5.Now I'm stuck behind the front desk while there's downed powerpnes, a jackknifed tractortrailer and reports of gunshots downtown.

结果现在我还被困在前台 而市区电线掉下 牵引拖车弯折 还接到枪击报警电话

6.Tragedy struck this morning on I75 when icy conditions caused a tanker truck to jackknife across three lanes and crash into the center divider.

今天早上75號公路發生了一個悲劇 結冰的路面致使一輛油罐車 橫穿三條車道 撞進中央分隔帶