名词
中文翻译：钱包
同义词：
['penknife', 'pocket knife']
例句：
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1.I need to find a pocket knife to open the lock on my bag.
我需要找到一把开锁刀来打开我的包的锁。
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2. He used his pocket knife to cut through the tape and free himself.
他用他的小刀割断了胶带，使自己自由了。
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3. The old man kept a pocket knife in his pocket for emergencies.
这位老人把一把小刀放在口袋里，以备紧急情况。