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| 1. | He handed me a knife with a keen edge. |
| 他递给我一把锋利的刀。 |
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| 2. | The knife was old,but the blade had a keen edge. |
| 这把刀是旧的，但刀刃锋利。 |
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| 3. | He bought a razor with a keen edge. |
| 他买了一把刀口锋利的剃刀。 |
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| 4. | A fine - grained whetstone for giving a keen edge to a cutting tool. |
| 细磨刀石纹理细密的磨刀，可使切削工具刀刃锋利 |
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| 5. | a keen edge |
| 锋刃。 |
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| 6. | The razor has a very keen edge. |
| 这把剃刀有锋利的口。 |
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