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单词
jackknife
释义
jackknife
1
NOUN
C
/ˈdʒækˌnaɪf/
1
a small knife with a blade that folds into its handle 小折刀
2
a dive in which you jump high , touch your toes, then stretch your legs out straight before entering the water with your hands and head first 屈体跳水
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plural
jackknives