名词
中文翻译：双刃剑
同义词：
['double-edged sword', 'double-edged knife']
例句：
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1.The twin blades of the scissors were sharp enough to cut through even the thickest fabric.
这把剪刀的双刃足够锋利，可以剪断最厚的布料。
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2. The twin blades are used in cutting and shaping metal.
双刃用于切割和成型金属。
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3.The twin blades of the knife were so sharp that it was difficult to hold them steady.
这把刀的双刃太锋利了，难以稳定握持。