jackknifed的翻译，读音
英/ˈdʒæknaift/
释义：
v. 对折, 用折叠刀切( jackknife的过去式和过去分词 )
v dive into the water bending the body at the waist at a right angle, like a jackknife
v dive into the water bending the body at the waist at a right angle, like a jackknife