The reason is that, besides its well-known role in haemoglobin, the oxygen-transporting molecule in the blood, iron is also involved in many aspects of brain development.
原因在于，除了铁在血红蛋白（血液中运输氧气的颗粒）中的重要性，大脑发育的很多方面都需要铁。
Reason who financial affairs fail the in many aspects, is mainly management and administration's incapability, unreasonable and excessively in debt structure stock right listed company.
上市公司财务失败的原因是多方面的，主要是经营管理无能、股权结构不合理以及过度负债。
The main reason is the training effectiveness is restricted and influenced by factors in many aspects such as the trainees'characteristics, external environment and training system.
究其原因，主要是由于培训效果受到受训者自身特点、外界环境、培训系统本身等因素的制约和影响。
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