This text surrounds that problem, makes some accidence and system discussion.
本文围绕该问题作了一些初步的、系统的认识和探讨.
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I have learnt some knowledge of it in accidence.
我初步学会了关于它的一些知识.
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Medical factors cause the accidence of MOF also.
医源性因素也参与MOF的发生.
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Ancient China had rich accidence concepts.
中国古人已有相当丰富的词法观念.
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