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| 1. | These general national statistics, however, obscure the details of the educational picture in the various |
| 可是，这些全国性综合统计数字掩盖了各个不同地区教育状况的详情。 |
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| 2. | Americans own thousands of spe-cialised tools that address nearly every human require-ment, however obscure |
| 美国人拥有涉及到人类几乎各项需要的专用器具，不论这种需要多么微不足道。 |
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| 3. | However, some obscure words are also needed in daily life, literature and diplom atic ways. |
| 在言语交际中，人们首先要求表达精确，也就是说要使用精确性的词语。 |
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