switchblade knife
英英释义
Noun- a pocketknife with a blade that springs open at the press of a button
例句
用作名词(n.)- The knife mechanism is essential to any folder.刀具的机械装置对任何折刀都是必须的。
- The policmen seized the folding knife that was used by the scoundrels.干警缴获了歹徒用来行凶的折刀。
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