jackknives

美 [ˈdʒækˌnaɪf] 　英 ['dʒæk.naɪf]

词形变化

复数：jackknives 第三人称单数：jackknifes 现在分词：jackknifing 过去式：jackknifed

同义词

英汉双解

1.	大折刀a large knife with a folding blade

1.	[i] 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.

英汉解释

n.	1. 大折刀;屈体跳水法
v.	1. 用大折刀切 2. (跳水等时)屈体

英英解释

n.	1. a small knife with a blade that folds into its handle 2. a dive in which you jump high, touch your toes, and then stretch your legs out straight before entering the water with your hands and head first
v.	1. if a truck or train jackknifes, it bends in the middle and its connected parts fold toward each other

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