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| 41. | scratch 'n sniff. |
| 抓挖和嗅探 |
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| 42. | starting from scratch |
| 白手起家 |
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| 43. | scratch hardness test |
| 划痕硬度试验 |
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| 44. | scratch hardness tester |
| 刮痕硬度试验仪 |
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| 45. | up to scratch |
| 达到标准 |
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| 46. | non-scratch varnish |
| 耐磨性清漆 |
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| 47. | To scrape;scratch. |
| 抓取；摩擦 |
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| 48. | scratch pad register |
| 便笺式寄存器, 暂时寄存器 |
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| 49. | pick blade scratch |
| 刮刀痕 |
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| 50. | without a scratch |
| 丝毫未受伤|安然无恙 |
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