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The presence of a cointegrating relationship between output and inputs, represented by either a two-factor Cobb-Douglas production function or a three-factor Cobb-Douglas type, depends crucially on whether country-specific intercepts and country-specific
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实证分析显示产出与投入之间同积关系的存在与否—不论这种同积关系是由二要素还是由三要素柯布?道格拉斯生产函数来代表，关键取决于各国经济发展的独特初始特徵和独特时间趋势特徵是否被考虑到。 |
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The presence of a sensory fovea in the mammalian visual system, auditory system and somatosensory system is a dramatic case of convergent evolution and points to common constraints in the way evolution can construct a complex brain.
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哺乳动物的视觉、听觉及体感觉系统都有感觉中央窝，是「趋同演化」令人惊叹的例子，也显示演化过程要塑造复杂的脑部时，面临了共同的限制。 |
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The presence of all of these categories may help you focus our search in a very specific way.
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所有这些类别的出现可以用一个非常具体方式帮助您集中我们的搜寻。 |
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The presence of any congenital anomaly, abruption, and cord complications were associated with antepartum stillbirth in both races.
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任何先天性畸形、胎盘早剥、脐带合并症是白人及非裔美国人发生产前死胎的危险因素。 |
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The presence of broken skin was an exclusion criterion.
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排除标准为表皮破损。 |
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The presence of clinical symptoms of infection and subsequent defervescence with removal and treatment of culture sensitive microbes may assist in making the diagnosis (2).
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临床感染症状的存在、随后退热药物对培养敏感细菌的治疗和消除可协助诊断[2]。 |
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The presence of constraints means resources are scarce.
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限制因素的存在说明了资源的短缺。 |
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The presence of dihydrolinalyl acetate in the lavender oil exposes the synthetic source and can be considered an adulterant.
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这样的话二次产物乙酸二氢芳樟酯就作为一种掺杂物存在薰衣草油里面。 |
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The presence of excess carotene in the blood, often resulting in yellowing of the skin.
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胡萝卜血症血液中出现过量的胡萝卜素，经常引起肤色发黄 |
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The presence of faults, however, accounts only for the ability of magma to reach the surface; it does not explain why the magma is produced in the first place.
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然而，断层的存在只说明了岩浆因此能涌出地表，却不能解释更根本的问题：为什麽这里会有岩浆？ |
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The presence of hemoglobin in the urine.
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血红蛋白尿尿液中出现血红蛋白 |
