《欧盟版权法指令》对合理使用提出的“三步测试法”（the three-step test ）指出，限制须限于特殊情形，须不妨碍著作权的通常行使，须不对著作权人利益造成不合理损害。
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the three-step test
三步测试
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The next step, typically, would have been to do a second-stage test (of three required phases) on a few hundred patients to confirm early results, proceeding later with costlier and bigger final-stage trials in thousands of people.
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