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| 1. | Our general policy is to place moral encouragement first, material incentives second. |
| 我们实行精神鼓励为主、物质鼓励为辅的方针。 |
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| 2. | first hand material |
| 原始材料 |
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| 3. | This new building material is first-rate ! |
| 这种新建筑材料是第一流的! |
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| 4. | American scientists have developed the first material that repairs itself. |
| 美国科学家已经开发出一种能自我修复的材料， |
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| -- 来源 -- 英语听读练30’（高三） - Passage 9 Self-Healing Plastic |
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| 5. | "Celluloid (1865~1870) Name for the first synthetic plastic material, developed in 1869." |
| 赛璐珞 (1865～1870): 1860年代后期美国发明家海亚特(J. W. Hyatt)用硝酸纤维素和樟脑的均匀胶体分散液研制成功的第一个合成塑料。 |
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| 6. | First, the noticed material must be specifically identified. |
| 首先，被通知的材料必须经过明确的识别鉴定。 |
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| 7. | Main reasons are that first material designs and machine craft are backward; second organization and |
| 其主要原因：一是材料设计与制造工艺落后，二是?20~30不等径系列磨球其截面的组织和性能存在较大差异。 |
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| 8. | " Celluloid (1865～1870) Name for the first synthetic plastic material, developed in 1869." |
| 赛璐珞(1865～1870):1860年代后期美国发明家海亚特(J.W.Hyatt)用硝酸纤维素和樟脑的均匀胶体分散液研制成功的第一个合成塑料。 |
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| 9. | material at first hand |
| 第一手资料 |
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| 10. | What were we to do with our material? First, the task of criticism. |
| 我们该怎样处理这些材料呢？首先是进行考订。 |
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